Heavy duty bio-degradable laboratory glassware cleaner, for difficult cleaning problems. Suitable for applications where chromic acid would normally be used. Effective on silicone greases, dried blood, and other organic residues. Cleans volumetric glassware without scrubbing. Soaking at room temperature usually is adequate. When used at specific dilution (2-5%) it is safe as 1 normal solution of sodium hydroxide. Contains no phosphates, borates, aluminates, sulfates, carbonates or other inorganic anions that may interfere with trace analysis.