Comparative Laundry Wash Study, A Qualitative Study of High-Performance Low Foaming Enzymatic Detergents and Residual Deposits

1. Introduction and background

1.1 Foam in high-efficiency front-loading washers

A front-loading washer cleans by repeatedly lifting textiles and dropping them through a comparatively small volume of wash liquor, so mechanical action at the drum wall and door glass matters a great deal. Washer manufacturers therefore specify high-efficiency (HE) detergents and measured doses. Samsung’s consumer guidance tells users to choose an HE detergent and to dose within the product label, the load size and the dispenser limits, and it notes that too much detergent can lead to buildup in the machine ^[3].

Excessive suds are also described as an operational problem. Tide’s detergent-manufacturer guidance says over-sudsing can cushion the tumbling action, interfere with rinsing and drainage, and lengthen the cycle. It names load size, dose and water hardness as relevant factors ^[5]. Samsung documents an excess-suds code on its washers: when suds are detected, the machine pauses briefly to let them dissipate and then resumes, and the code itself does not mean service is needed ^[2].

These sources establish that sudsing is a recognized practical concern in HE machines and that some machines respond to it automatically. They do not show that any particular amount of visible foam damages a washer, and this study makes no such claim. Both sources are manufacturer or trade guidance, not peer-reviewed comparative research. They are cited here only for practical context.

How much foam forms in a wash, and how long it lasts, depends on many factors besides the amount of product. These include the type of surfactant and any foam-control components, water temperature and hardness, soil and textile load, and the intensity and timing of drum movement. Visible foam also varies across a single cycle as the machine moves between fill, wash, drain, rinse and spin. A comparison of foam between products is meaningful only when these factors are held constant or recorded, and only when observations are made at comparable cycle phases. That requirement shapes how the observations below can be read.

1.2 Detergent buildup, moisture and microbial colonization are different things

Samsung’s troubleshooting guidance names detergent buildup, retained moisture and incomplete maintenance as contributors to washer odor. It advises wiping the door seal, dispenser drawer and tub and letting the machine dry ^[4]. Separately, microbiological research has shown that washers can host biofilms. Gattlen and colleagues sampled biofilms from 11 washing machines from three continents, identified the organisms present and tested their tolerance to a standard detergent ^[6]. The machines in that study were selected because they were relevant to biofilm investigation, so the work does not estimate how common washer biofilms are. It shows that colonization can occur, not that any particular machine is colonized.

Three things need to be kept apart. Detergent or soil residue is non-living material deposited on textiles or machine surfaces. Foam is a transient dispersion of air in liquid. A biofilm is a surface-attached microbial community that can be identified only with microbiological methods. Foam, cloudy water, odor or visible deposits cannot by themselves show that a biofilm is present or absent, and this study did not measure residue chemistry or microbial colonization.

1.3 Why detergent retained on textiles is of interest

Interest in detergent left on laundered fabric is driven partly by work on the skin barrier. Rinaldi and colleagues exposed C57BL/6 mouse skin and ex vivo human skin to household laundry detergents. They assessed barrier function by electrical impedance spectroscopy and transepidermal water loss, together with transcriptomic and protein analyses ^[1]. In these experimental systems they reported impaired barrier measurements and changes in barrier-related and inflammatory pathways. Ex vivo human skin exposed to detergent or to sodium dodecyl sulfate showed reduced electrical impedance ^[1]. The paper cites earlier air–liquid-interface cell-culture work as background, but its own experiments were in mouse skin and ex vivo human skin. The authors note that they used a single stimulation and call for work on repeated, chronic exposure ^[1].

That study supports investigating detergent exposure. It was not a wear trial of laundered garments, it did not tie its exposure concentrations to the amounts left on fabric after ordinary laundering, and it did not test either product examined here. It therefore cannot show that residue from normal washing harms skin, or that one detergent is safer than another. No skin, barrier or irritation endpoint was measured in the present study.

1.4 What a soak test can and cannot show

Re-soaking laundered, dried textiles in clean water, pressing them, and inspecting the water for foam or haze is a simple household demonstration. Foam that forms on pressing and lasts suggests that surface-active material has entered the water. However, pressing wet terry towels also traps air mechanically, and foam stability depends on what else is dissolved or dispersed. Haze (turbidity) appears when suspended or dispersed matter scatters light.

In this report, the soak test is a descriptive observation of appearance, not a chemical measurement of detergent residue.

1.5 Rationale and aims

The developer proposes BIOBURST™ as a novel, high-performance, low-foam, low-residual-profile enzymatic detergent. The present study was designed as a documented visual comparison with a named commercial enzymatic detergent (Competitor), in an ordinary domestic front-loading washer. Its aims were:

1. to document visible foam at the door glass and gasket over the course of a wash cycle for each condition;
2. to document the appearance of a post-drying towel soak and of soak-water samples in glasses; and
3. to record which run parameters were controlled, observed, or not recorded, so that the reach of any comparison is explicit.

2. Methods

2.1 Study design

This was a descriptive, single-operator observational study carried out in the author’s home laundry. There were three conditions (Table 1), each consisting of a single wash load of two towels. The wash load is the experimental unit. The two towels within a load are subsamples, and the multiple video clips within a load are repeated views of that one load. Neither the towels nor the clips are independent replicates.

2.2 Products

Comparator. Competitor product: Bio Laundry Detergent, Signature with Phytolase®, Magnolia/Bergamot/Cedar scent, 640 mL refill (SKU 110116). The operator photographed the package (Figure 7), and the UPC on the back panel reads 850018918176. The photographs identify the commercial product only. They do not document the lot, the age of the product or the composition. Competitor is used as a named commercial comparator. No claim about its market position is made.

Test product. BIOBURST™ batch 11-7-26, an enzymatic detergent concentrate prepared by BIOBURST™ LAUNDRY LAB. The front and back packaging images in Figure 7 are product-presentation illustrations supplied by the developer. They are not photographs of the tested batch, and the label statements on them are not findings of this study.

2.3 Washer, program and settings

All loads were washed in the same Samsung front-loading washer. Its model number, capacity, manual and HE-related specifications were not recorded. The operator’s notes describe the Competitor run as a “45 min standard wash – warm water.” A setup clip recorded before the BIOBURST 2 teaspoons wash (IMG_9130; Figure 2) shows the control panel with the Heavy Duty program indicator lit, rinse count at five (top indicator) and soil level at Heavy (top indicator). Temperature and spin are each one level below their top indicators: not Hot and not High. The display reads 45 min.

2.4 Machine preparation between conditions

A full washing-machine cleaning cycle was run before every test. Prior to each washing cycle, a standard sanitization cycle using 2 cups of white vinegar added to the tray was performed to ensure the washing machine prior to the test cycle was as free of detergent residuals as possible.

2.5 Textiles

Each load consisted of two white terry towels (Figure 2, IMG_9128). Before each wash cycle, the towels were rinsed and wrung out as thoroughly as possible to remove residual detergent. The rinse water in the sink was visually checked, and rinsing continued until barely any residual detergent was apparent by eye.

2.6 Dosing and dose transfer

Doses were measured with a standard teaspoon (1 US teaspoon ≈ 5 mL). Competitor: the operator measured 1 teaspoon and added it to the dispenser tray. Because the product is viscous, an estimated 1–2 mL stayed on the spoon. The operator rinsed the spoon over the tray with about 1 US fl oz (≈30 mL) of warm water, then swished it in a second ≈1 fl oz of water that was also added. About 60 mL of extra water entered the dispenser with the product.

The written protocol calls 1 teaspoon the recommended Competitor dose. BIOBURST 2 teaspoons: IMG_9129 shows a spoon-to-cup transfer (Figure 2). Delivered doses were recorded.

2.7 Wash-cycle video documentation and time assignment

The operator filmed the washer interior through the door glass at intervals using a handheld device. In some clips the drum light gives a blue cast and strong specular reflections. File metadata (ffprobe) reports 1920×1080 coded frames for all 57 original MOV files, which display in portrait orientation, and clip durations of 1.9–68.2 s. No fixed sampling schedule is documented, and the sampling times differ between conditions. Each clip’s time in the cycle was assigned using the rules in Table 2. Remaining-time values are converted to approximate elapsed time as 45 − X minutes on the nominal 45-minute cycle. This conversion assumes the countdown ran linearly and was not extended. Derived times are marked as approximate (≈). Where two sources give different times, both are reported (Table 2).

2.8 Drying

The protocol specified drying the towels before the soak test. For the Competitor load the operator recorded drying in a dryer for 1 h on hot. Footage of the Competitor towels after drying (IMG_9119) is included.

2.9 Post-drying soak and glass documentation

The protocol specified filling a sink with about 3 US gallons of water, approximately 2 inches high. Water temperature was approximately 100 F and clear.

The soak water was collected using clear, stemless glasses and set on level counter top.

2.10 Video processing and review

Original MOV files were kept unmodified. For this report each clip was converted to a browser-compatible H.264 MP4 derivative in a square frame (480 or 540 px, with the original portrait framing preserved inside it) with the original audio track kept (video stream copied unchanged; audio AAC 96 kbps, not edited or enhanced). In the HTML edition each clip opens on a still poster frame from the same file, chosen to show the content described, and plays only when the reader selects play without sound or play with sound; both open the same clip with standard player controls.

All 57 study clips were reviewed in full using AI-assisted video review, and observations were recorded as structured notes and checked against extracted still frames. Original audio was consulted only for timing statements in voice-over (IMG_9105, IMG_9107, IMG_9106) and for the settings statement in IMG_9130. A single review was performed. This study is not blinded or randomized. It is merely for observational purposes. The terms in Table 3 were defined for this report and applied to all clips.

2.11 Analysis

The analysis is descriptive. For each condition, observations are presented in cycle-time order. Conditions are then compared qualitatively within broad cycle phases: early (≤15 min), middle (16–30 min), late (31–44 min) and end-of-cycle with the door open. No numerical foam scores, foam heights, turbidity values, ratios, statistical tests, p-values or confidence intervals were produced. With one load per condition and unmatched sampling, none would be appropriate.

3. Results

3.1 Footage reviewed

The study record comprises 57 video clips (Table 5): 36 washer-interior wash clips (Competitor 11, BIOBURST 2 teaspoons 11, BIOBURST 1 teaspoon 14), 3 BIOBURST 2 teaspoons preparation clips, and 18 post-drying soak/glass clips (Competitor 6, BIOBURST 2 teaspoons 7, BIOBURST 1 teaspoon 5). All 57 were reviewed. Each appears once in Figures 1–6 (grouped under Washing Cycles and Residual Testing) and in the source register (Appendix A) with its time label, timing basis and observation.

3.2 Wash phase — Competitor 1 teaspoon (Figure 1)

The first clip, at about 1 min (IMG_9103), shows only thin, watery, scattered bubbles. By 3 min (IMG_9105, operator voice-over), heavy, thick foam covered much of the door glass. At about 10 min (IMG_9106), voluminous opaque foam filled the lower glass and the door seal, with dense smears as the two towels churned. The notes give 10 min for this clip and the operator’s spoken comment gives about 6–7 min (Table 2). At about 13 min (IMG_9107; see Table 2), foam was still present on the towels and glass, though somewhat less dense than at 3 min. Camera numbering (IMG_9106 before IMG_9107) agrees with the stated times. The operator’s video labels (Vid 4 and Vid 3) number these two clips in the opposite order.

At 18 min (IMG_9109) the clip shows thick floating foam rafts and large persistent patches. In the late phase, a rapid spin at about 33 min (IMG_9110) washed part of the foam off the glass, although streaks remained. Dense patches were again present at the lower glass and seal at about 34 min (IMG_9111). A fast spin at about 39 min (IMG_9112) left the glass mostly clear except for a thin foam line at the bottom. When slow tumbling resumed at about 40 min (IMG_9113), foam reappeared at the lower glass, and persistent white bubbles were still present at about 42–43 min (IMG_9114). When the door was opened after the cycle (IMG_9115), a pool of white foam sat in the lower fold of the gasket. Overall, visible foam in this load rose quickly, stayed dense through the middle of the cycle, was reduced but not removed during spin, and was still present at the end.

3.3 Wash phase — BIOBURST 2 teaspoons (Figure 2)

The preparation clips show the two towels (IMG_9128), the spoon-to-cup dose transfer (IMG_9129) and the control panel (IMG_9130) described in Section 2.3. At about 6 min (IMG_9131), the tumbling load showed thin foam patches on the glass, and no dense foam was seen. At about 15 min (IMG_9132) foam was thin and sparse. Between about 24 and 28 min (IMG_9134, IMG_9136, IMG_9137) the clips show thin patches, vigorous water movement against the glass with occasional small patches, and then minimal patchy foam.

At about 33 min, the spin/drain clip IMG_9138 shows trace bubbles. In IMG_9140, the operator’s filename notes that the drum “fills clear then suds when move,” and the reviewed footage shows deeper, moving water without a firm foam layer. In the late spin views at about 35, 40 and 44 min (IMG_9141–9143), no foam was visible. Reflections and motion blur in these clips limit how confidently foam can be ruled out. At the end of the cycle (IMG_9145) the lower door gasket was wet, with no foam visible.

3.4 Wash phase — BIOBURST 1 teaspoon (Figure 3)

Early clips at about 8 min (IMG_9159) and about 13 min (IMG_9161) show persistent foam patches on the lower and middle glass and on the gasket while the load tumbled. At about 19 min, foam patches were moderate (IMG_9162), with moderate streaks in a second short clip (IMG_9163). By about 24 min (IMG_9164) the spinning load showed light-to-moderate persistent patches, and at about 30 min (IMG_9165) only trace foam.

In the late phase, the operator’s filenames describe a spin cycle, while the footage shows alternating fill/tumble and spin. A fill/tumble clip at about 33 min with a clearer view (IMG_9166) shows very light foam and a few small patches. Tumbling at about 34 min (IMG_9168) produced suds and splashing, with moderate foam at the bottom of the glass. From about 35 to 37 min (IMG_9169–9173), foam was light-to-moderate, then light, small and very light. During the rinse/spin at about 40 min (IMG_9174), trace foam remained on the gasket. When the door was opened after the cycle (IMG_9175), foam remained pooled in the gasket folds. This load therefore produced substantial early foam that declined over the cycle but did not disappear.

3.5 Wash phase — cross-condition comparison

Table 6 sets the wash observations side by side by cycle phase. The clearest contrast is between Competitor 1 teaspoon, with dense foam through the early and middle phases and foam still in the gasket at the end, and BIOBURST 2 teaspoons, with thin or sparse patches throughout and no gasket foam visible at the end. The BIOBURST 1 teaspoon load did not fall between these in a simple way. Its early foam was moderate and persistent. It became lighter than Competitor in the late phase, but, like Competitor, it left foam pooled in the gasket at the end. Sampling times were not matched across conditions, the number of clips differs, and lighting and camera angle varied. The comparison is therefore a qualitative description of what was filmed, not a ranking on a measured scale.

3.6 Post-drying soak — Competitor 1 teaspoon (Figure 4)

After drying, the towels were shown folded on the counter (IMG_9119). The sink water was clear and still before the towels went in, and a tape measure was held in it (IMG_9120). When the submerged towels were pressed and agitated (IMG_9121), the water turned cloudy, with agitation bubbles and some foam, and bright glare limited the view into the water. In IMG_9123, two stemless glasses are shown on the counter, and liquid is poured from a black pitcher into one of them. One glass looks clear, and the other looks cloudy and scatters blue light. The clip does not document which liquid each glass contains. The settled sink water with the towels in it was cloudy. With the towels removed (IMG_9124), the sink water stayed cloudy, with some persistent surface bubbles/foam. A final clip (IMG_9125) shows the glasses and then the still, cloudy sink water.

3.7 Post-drying soak — BIOBURST 2 teaspoons (Figure 5)

Pressing the submerged towels (IMG_9146, at about 0–10 s and 20–26 s) produced transient bubbles that did not form a continuous, persistent ring, and the water was slightly cloudy after agitation. In the still-soak clips (IMG_9147–9149), no continuous foam layer was present. IMG_9148 shows a few isolated static bubbles on the sink walls. Soak-water samples in a stemless glass and a short jar (IMG_9150–9152) looked mostly clear. Small stationary specks/bubbles were seen at the bottom of the jar, and the liquid in the clip filenamed “3 minutes after” (IMG_9152) was clearing, with visible specks. No foam was seen in the containers. What each container held was not documented.

3.8 Post-drying soak — BIOBURST 1 teaspoon (Figure 6)

The sink water was clear before the towels were added (IMG_9177). After the towels were immersed and pressed, the water became slightly hazy/turbid under strong glare, with few or no bubbles and no persistent foam. Later still-soak views, lit with a handheld light, show hazy/turbid water. These include a brief press at about 24 s (IMG_9178), visibly hazy water with reflections and no bubbles or foam once the towels had settled (IMG_9179), and a very brief hazy view (IMG_9180). Two unlabeled stemless glasses (IMG_9181) looked mostly clear in ambient light. Under strong light, tiny illuminated particles/microbubbles were seen in the left glass, and no foam was present. The haze seen in the sink was not apparent in the glasses.

3.9 Post-drying soak — cross-condition comparison

Table 7 summarizes the soak observations. Within the footage, the Competitor soak water looked the cloudiest. It became cloudy on agitation, stayed cloudy with some persistent surface bubbles after the towels were removed, and one of its two glasses looked cloudy. The BIOBURST 1 teaspoon soak became slightly hazy/turbid without persistent foam. The BIOBURST 2 teaspoons soak showed transient bubbles and slight haze. In both BIOBURST conditions the glass samples looked mostly clear apart from small specks or microbubbles. The ordering is descriptive and specific to these clips.

4. Discussion

4.1 Principal observations

Across 57 reviewed clips from three single-load conditions, three patterns stand out. First, the Competitor 1 teaspoon load produced dense, persistent visible foam from the first minutes of the cycle through mid-cycle. Spin reduced it only partly, it re-formed during late tumbling, and it remained in the door gasket at the end. Second, the BIOBURST 2 teaspoons load showed only thin or sparse foam in every clip where foam could be judged, and its gasket showed no visible foam at the end. Third, the BIOBURST 1 teaspoon load, at half that nominal dose, produced moderate early foam that declined over the cycle and left foam pooled in the gasket at the end.

In the post-drying soak, the Competitor water looked cloudier than the BIOBURST soak water. Both BIOBURST conditions showed slight haze in the sink and mostly clear glass samples.

4.2 Interpreting the wash-foam observations

The contrast between Competitor 1 teaspoon and BIOBURST 2 teaspoons is consistent with the developer’s proposed low-foam positioning for BIOBURST.

The BIOBURST 1 teaspoon dose appeared to generate a similar amount of foam during washing as the 2-teaspoon dose. In the operator’s visual assessment of residual testing, the towels washed with BIOBURST 1 teaspoon showed the lowest apparent residual detergent of all three test articles.

The following points also bear on the foam comparison:

• Textile preparation. Before each wash cycle, the towels were rinsed and wrung out as thoroughly as possible to remove residual detergent. The rinse water in the sink was visually checked, and rinsing continued until barely any residual detergent was apparent by eye.
• Delivered dose. Delivered doses were recorded.
• Program and water conditions. Water temperature, hardness and fill volume were not measured.
• Sampling and imaging. Clips were taken at different cycle times in each load. Foam visible at the door glass depends on drum motion, water level, camera angle and lighting. Several BIOBURST 2 teaspoons late-spin views were limited by reflections and blur.

The wash-foam observations for the two BIOBURST doses are not interpreted as a dose–response relationship. Likewise, the greater foam in the Competitor load is a description of this load under these conditions. It is not a general characterization of that product, whose label dose and lot were not verified. Visible foam is also not a measure of cleaning: low-foam and high-foam detergents can both clean well or poorly, and no cleaning endpoint was measured.

4.3 Interpreting the soak observations

The cloudier appearance of the Competitor soak water, compared with the slight haze of both BIOBURST soaks, is the second main contrast. The operator attributed the visible cloudiness to residual detergent.

The BIOBURST glass samples looked mostly clear apart from small specks or microbubbles, and the glass views generally looked clearer than the corresponding sink views.

4.4 Relation to the background literature

Manufacturer and trade guidance treats over-sudsing in HE machines as a practical issue affecting tumbling, rinsing and cycle time ^[2,3,5]. This explains why visible foam is a reasonable thing to observe. This study did not record any excess-suds pause, error code, cycle extension or rinse outcome, so it cannot link the foam it observed to machine behaviour. Samsung’s association of detergent buildup and moisture with odor ^[4] and evidence that washers can host biofilms ^[6] are relevant to why consumers care about detergent buildup in the machine. However, gasket foam at the end of a cycle is not evidence of buildup or biofilm, and no deposits or microbes were sampled. Finally, experimental evidence that detergents can disrupt skin-barrier measurements in mouse and ex vivo human skin ^[1] motivates interest in what remains on fabric. The present study measured no residue amount and no skin endpoint, so it cannot connect either product to skin outcomes.

4.5 Positioning terms and what this study supports

Table 8 sets each proposed positioning term against the evidence this study provides.

4.6 Strengths

The study documents observations across each wash cycle at sampled intervals, with many time-labelled views (11–14 wash clips per load). It preserves every study clip as playable evidence linked to its source identifier. It records the setup panel for one run, describes the dose transfers, and reports differing timing statements side by side. Because all 57 clips are included alongside the draft text, readers can check every observation against the footage.

4.7 Implications for further study

A confirmatory comparison would need several independent loads per condition in randomized order. Each load would need a verified machine baseline and fresh, pre-stripped, weighed textiles from one lot. Doses would be dispensed gravimetrically, and program settings, water temperature and hardness would be recorded. Foam would be imaged with a fixed camera and lighting at predefined cycle times, ideally with blinded scoring. Soak tests would use equal measured volumes, times and agitation, with labeled clean-water controls. Claims about residue would require analytical measurement of surfactant or other detergent components extracted from the textiles. Claims about cleaning performance would require standardized soil or stain swatches.

5. Limitations

• No replication. There was one wash load per condition. Towels and clips are subsamples, not replicates, so between-load variability is unknown and no statistical inference is possible.
• Washer and settings. The washer model and capacity are not recorded. No measurement of temperature, hardness or fill volumes is documented.
• Machine state and textiles. A full washing-machine cleaning cycle was run before every test. Before each wash cycle, the towels were rinsed and wrung out as thoroughly as possible to remove residual detergent. The rinse water in the sink was visually checked, and rinsing continued until barely any residual detergent was apparent by eye.
• Timing. Clip times are stated, derived from remaining time on an assumed 45-minute cycle, or taken from voice-over. For two clips (IMG_9106, IMG_9107) the notes and spoken comments give different times, and both are reported.
• Imaging. Footage was handheld, with variable angle, distance, drum and room lighting, glare, reflections and motion blur. Several late-spin views limit how far absence of foam can be judged.
• Soak. Sample containers were not labeled on camera, and clean-water control identities were not documented.
• Qualitative endpoints only. Foam and haze were described in words, not measured. No chemical residue assay, turbidity measurement, cleaning-efficacy test, skin or irritation test, or microbiological or biofilm test was performed.
• Single reviewer. One AI-assisted review was performed, without independent second scoring or a measure of inter-rater agreement.
• Author involvement. The author prepared the BIOBURST batch, ran all conditions and filmed the footage, and the report is issued under the Maxim BIOBURST™ Laundry Lab name. The study was not independently conducted, audited or peer reviewed.

6. Conclusions

In one domestic Samsung front-loading washer, with one load of two towels per condition, the Competitor 1 teaspoon load showed dense, persistent visible foam through most of the wash cycle, with foam remaining in the door gasket at the end. The BIOBURST 2 teaspoons load showed only thin or sparse foam and no visible gasket foam at the end. The BIOBURST 1 teaspoon load showed moderate early foam that lessened over the cycle but left foam pooled in the gasket at the end.

After drying, the Competitor soak water looked cloudier than the BIOBURST soak water, and the BIOBURST glass samples looked mostly clear apart from small specks or microbubbles. The operator attributed the visible cloudiness to residual detergent.

These observations are consistent with lower visible foam for BIOBURST at 2 teaspoons in this setting. They establish no dose–response relationship. Because the evidence is visual and unreplicated, the study does not quantify detergent residue, demonstrate cleaning performance, or support any claim about skin safety, washer hygiene or biofilm. It documents the procedure used and the observations made, which can inform the design of a better-controlled comparison.

Operator’s overall qualitative assessment. After reviewing all of the footage, the operator (Keith Roberts, November 8, 2026) judged that Competitor 1 teaspoon showed moderate-to-high visible foam during washing, while BIOBURST at both 2 teaspoons and 1 teaspoon showed moderate foam. In the post-drying sink comparison, he judged Competitor to show the most residual foam and BIOBURST 1 teaspoon the least of the three conditions. In the glass comparison, he judged Competitor to show the most visible cloudiness or specks and BIOBURST 1 teaspoon the least; no foam was seen in the glasses in the reviewed clips. These are the operator’s overall visual impressions, not calibrated foam measurements. Visual appearance does not measure the amount of chemical detergent residue.

Product identification

Figure 7 shows the comparator package photograph and UPC crop, and the BIOBURST packaging illustrations. The Competitor image is an actual package photograph from the operator, with the background removed and the product pixels kept. The UPC crop is taken from the operator’s back-panel photograph. The BIOBURST images are developer-supplied packaging illustrations, not photographs of the tested batch. Statements on the packaging artwork are not findings of this study.

Comparator (photograph). Competitor product: Bio Laundry Detergent — Signature with Phytolase®; Magnolia/Bergamot/Cedar; refill 640 mL (21.6 fl oz); SKU 110116; UPC 850018918176.

BIOBURST™ (packaging illustrations, front and back). Developer-supplied artwork. These are not photographs of tested batch 11-7-26.

Declarations

Author. Keith Roberts. Inventor with over 25 patents in medical devices and industrial filtration, and author of one scientific publication. Biographical details are as supplied by the author.

Author involvement and interests. The author prepared the tested BIOBURST batch, designed and performed all wash and soak procedures, recorded all footage, and authored the operator notes on which the methods are based. BIOBURST™ is presented under the Maxim brand, and the report is issued under the Maxim BIOBURST™ Laundry Lab name. No third-party laboratory, accreditation or independent verification is claimed.

Data availability. The HTML edition of this report embeds all 57 study clips as playable H.264 derivatives with their original sound (playable without or with sound), each linked to its source identifier in Appendix A. Original MOV files are held by the author.

Funding. Not stated by the author.

Use of AI assistance. AI tools were used to review video footage, organize the source register and draft the manuscript text for author review.

References

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   Peer-reviewed experimental study (mouse skin and ex vivo human skin); not a wear trial and not a study of either product tested here. ↩1↩2↩3↩4
2. Samsung Electronics America. Samsung washing machine information and error codes. Samsung US Support. Accessed November 8, 2026. https://www.samsung.com/us/support/troubleshoot/TSG10000997/
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   Manufacturer support guidance (buildup, moisture and maintenance as odor contributors). ↩1↩2↩3
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   Detergent-manufacturer guidance; not a peer-reviewed study. ↩1↩2↩3
6. Gattlen J, Amberg C, Zinn M, Mauclaire L. Biofilms isolated from washing machines from three continents and their tolerance to a standard detergent. Biofouling. 2010;26(8):873–882. doi:10.1080/08927014.2010.524297. https://doi.org/10.1080/08927014.2010.524297
   Peer-reviewed microbiology study of 11 selected machines; not a prevalence survey. ↩1↩2