NALGENE L900 Liquid Detergent (Cat. No. 900-1000 & 900-4000) is designed to clean all plastics and glassware at a neutral pH. A 5% solution in water is usually sufficient but can be increased to 20% for stubborn residue or heavily soiled labware. L900 Detergent can be used in automatic washers for lightly to normally soiled items.

Soak the labware in the detergent for up to 3 hours, then gently wash with a cloth or sponge. Soak heavily soiled items in a 5 to 20% concentration in water for 4 or more hours prior to washing. Rinse with tap water and then distilled water.

Special note on polycarbonate (PC) Repeated washings in the dishwasher weaken the exceptional strength of PC. PC labware that has been exposed to high stresses (such as those caused by centrifugation or use in vacuum chambers) should always be washed by hand using a mild, neutral pH, non-abrasive detergent without sheeting agents, such as NALGENE L-900.

Keep the dishwasher cycle time to a minimum. Use the plastics cycle and set the water temperature at 135F (57C) or lower. Remove the labware as soon as possible after cooling is complete. Avoid excessive abrasion of plastics by covering metal spindles with soft material such as plastic tubing. Plastic labware should be weighted down and held in place with accessory racks.