Taylor K-9065

ChemWorld is a distributor of Taylor Technologies Test Kits and Reagents. Order directly online and save today.

DROP TEST QUATERNARY AMMONIUM COMPOUND (QAC) (1 drop = 1.25 ppm) > & POLYQUAT (1 drop = 0.5 ppm)

COMPONENTS: 1 x 5385 Instruction 1 x 9012 Pipet, Calibrated 0.5 & 1.0 mL, plastic w/brown cap 1 x 9198BR Sample Tube, Graduated, 25 mL, plastic w/cap and brown dot 1 x R-0638BR-C Phenolphthalein Indicator (brown cap), 2 oz, DB 1 x R-0736BR-C Sulfuric Acid .6N (brown cap), 2 oz, DB 1 x R-0881-C Toluidine Blue O Indicator, 2 oz, DB 1 x R-0950-C Complexing Reagent, 2 oz 1 x R-0951-C QAC Titrating Solution, 2 oz, DB

Quaternary Ammonium Compound (QAC) Test

For 1 drop = 1.25 ppm QAC

NOTE: Run a blank using water containing no QAC. Record drops of R-0951 QAC Titrating Solution used.
1. Rinse and fill 25 mL sample tube (#9198BR) to 25 mL mark with water to be tested.
2. Using a 1.0 mL pipet (#9012), add 1.0 mL R-0950 Complexing Reagent. NOTE: If sample water contains a hardness concentration above 500 ppm, add 2.0 mL (2 x 1.0 mL) R-0950 Complexing Reagent.
3. Add 1 drop R-0638BR Phenolphthalein Indicator. Swirl to mix. If colorless, proceed to step
4. If pink, add R-0736BR Sulfuric Acid .6N dropwise, swirling after each drop, until color changes from pink to colorless.
4. Add 3 drops R-0881 Toluidine Blue O Indicator. Swirl to mix. If QAC is present, sample should turn light blue.
5. Add R-0951 QAC Titrating Solution dropwise, swirling and counting after each drop, until color changes from light blue to violet-pink. Always hold bottle in vertical position. NOTE: Further addition of R-0951 QAC Titrating Solution should produce no color change.
6. Subtract drops of R-0951 QAC Titrating Solution used in blank from drops used in sample (step 5). Multiply by 1.25. Record as parts per million (ppm) QAC as n-alkyl(50% C14, 40% C12, 10% C16) dimethylbenzylammonium chloride.

NOTE: Equivalences for quaternary ammonium compounds other than those listed must be determined by titration with a known standard. Polyquat Test For 1 drop = 0.5 ppm NOTE: Run a blank using water containing no polyquat. Record drops of R-0951 QAC Titrating Solution used.

1. Rinse and fill 25 mL sample tube (#9198BR) to 25 mL mark with water to be tested.
2. Using a 1.0 mL pipet (#9012), add 1.0 mL R-0950 Complexing Reagent. NOTE: If sample water contains hardness concentration above 500 ppm, add 2.0 mL (2 x 1.0 mL) R-0950 Complexing Reagent.
3. Add 1 drop R-0638BR Phenolphthalein Indicator. Swirl to mix. If colorless, proceed to step 4. If pink, add R-0736BR Sulfuric Acid .6N dropwise, swirling after each drop, until color changes from pink to colorless.
4. Add 3 drops R-0881 Toluidine Blue O Indicator. Swirl to mix. If polyquat is present, sample should turn light blue.
5. Add R-0951 QAC Titrating Solution dropwise, swirling and counting after each drop, until color changes from light blue to violet-pink. Always hold bottle in vertical position.
NOTE: Further addition of R-0951 QAC Titrating Solution should produce no color change.
6. Subtract drops of R-0951 QAC Titrating Solution used in blank from drops used in sample (step 5). Multiply by 0.5. Record as parts per million (ppm) polyquat as poly[(oxyethylenedimethyliminio)ethylene (dimethyliminio)ethylenedichloride].

NOTE: Equivalences for polyquats other than those listed must be determined by titration with a known standard.