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Trial Number 11

Trial Purpose:

To follow up on the results of the previous experiment

Date Run:

01/27/2005

Experiment Procedure:

Six biobased cleaners were selected from the lab's inventory of biobased alternatives. The trial also included one cleaner that was non-biobased "green" floor stripper for purposes of comparison. This product (Enviro Star Green Floor Stripper) and the client’s current stripper were diluted to 25% v/v in accordance with each manufacturer’s recommendations. The other six products were used at full strength (100% v/v).

Twenty-four pre-weighed plastic composite tiles were coated with Johnson Wax Professional Show Place floor finish (40861-29-8, 78-51-3, 34590-94-8, 111-90-0) using a hand held swab. The finish was dried using a hand held heat gun for two minutes at ~300 F. Once the finish/coupon had cooled, three more coats were applied following the same procedure. Coupons were reweighed to determine the amount of finish that was applied. In order to compare performance on different materials 24 other coupons of ceramic materials were also coated with the Johnson Wax Professional Show Place floor finish using the same procedure.

Three coated coupons of similar materials were placed in a BYK Gardner abrasion tester used to apply uniform manually cleaning. The coupons were sprayed with a cleaning product. The formulation was allowed to sit on the finish surface for 10 minutes. Rectangular pieces of stripping pads (QEP Grout Clean Up Kit Coarse Pads normally used for floor stripping) - previously cut to fit the sizes of the coupons was placed on the cleaning sled and sprayed with the same cleaning product as the coupons. The cleaning lasted for 140 cycles (Five minutes). At the end of the cleaning, the coupons were wiped once to remove any cleaner residue. Final weights were recorded and efficiencies were estimated qualitatively using a black UV light. This procedure was repeated for all 48 coupons.

Trial Results:

All eight products appeared to have had more than 80% cleaning efficiency on the plastic coupons as shown on the Table below. However, the application of the cleaners on the ceramic coupons yielded results ranging from 23% (DBE-5) to 97.5 (Enviro Star Green Floor Stripper)

Plastic Coupons
Qualitative Assessment (Estimates of Removal Efficiency Qualitatively)

Cleaning Product Observer 1 Observer 2 Average
Enviro Star Green Floor Stripper 99 99 99
Soy Solv 11 Plus 99 99 99
SolSafe 245 94 93 93.5
Corn Solv 99 99 99
Soy Solv Industrial 83 83 83
DBE 6 99 99 99
Johnson Floor Stripper 93 98 95.5
DBE 5 99 99 99

Ceramic Coupons
Qualitative Assessment (Estimates of Removal Efficiency Qualitatively)

Ceramic Coupons      
Qualitative Assessment (Estimates of Removal Efficiency Qualitatively)
Cleaning Product Observer 1 Observer 2 Average
Enviro Star Green Floor Stripper 97 98 97.5
Soy Solv 11 Plus 38 47 42.5
SolSafe 245 37 45 41
Corn Solv 58 80 69
Soy Solv Industrial 62 68 65
DBE 6 43 65 54
Johnson Floor Stripper 99 99 99
DBE 5 13 33 23

Success Rating:

A follow up test, usually based on company input.

Conclusion:

All eight products performed well on the plastic coupons but had varied effects on the ceramic coupons.  The high efficiencies of the plastic coupons may have been attributed to the abrasive effects of the pads on the coupons going beyond the coatings and removing part of the coupon itself.

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