Drydene Ratio™ SC

Part #D64410

DRYDENE RATIO™ SC is a versatile, highly-effective surface cleaning fluid fortified with alkali builders to promote consistent pH levels and thorough surface and sump decontamination. Ratio SC combines powerful surfactant and dispersant chemistries to improve the breakdown of fats and oils often found in metalworking coolants as well as surface deposits and debris.

330 Gal Tote, 5 Gal Pail, 55 Gal Drum

Product Applications

DRYDENE RATIO SC is designed for use in a variety of metalworking, maintenance and industrial applications where powerful surface and/or system cleaning of most ferrous and non-ferrous metals are desired:

• Central systems and sumps of machining tools utilizingsoluble metalworking fluids
• Flood and spray wash units
• Floor and hard surface cleaning delivery systems
• Soaking and agitating tanks
• Mop, bucket and other manual wash types

Features & Benefits

DRYDENE RATIO SC cleans most ferrous and non-ferrous surfaces of debris, oils, greases, hard water salts and other surface contaminants while also inhibiting the growth of bacteria in sumps and systems:

• Effectively cleans in both hard and soft water applications
• Pleasant pine/citrus aroma for operator comfort
• Robust alkalinity that cleans without affecting surface coatings

Drydene Ratio SC should be used before introducing new coolants and may be used prior or after discharging a sump of contaminated lubricant. Ratio SC is most effective if the spent coolant is drained and a 2 to 4 % solution of Ratio SC in water is allowed to circulate through the machine for a minimum of 15 minutes. An alternate method is to add Ratio SC to the spent coolant prior to draining. A treat level of 3 to 5% of the total coolant volume is recommended. Recirculate this mixture for a minimum of 2 to 3 hours. After circulating Ratio SC, remove, and flush machine with water for 5 minutes. Immediately charge the machine with new coolant and circulate to avoid corrosion and resume normal operation.

Technical Properties

Color Visual Yellow
Appearance Visual Clear liquid
Odor Physical Pine/Citrus
Specific Gravity @ 60­°F ASTM D891 1.07
Density, lbs/gal Physical 8.75
pH @ 10% ASTM D1172 11.0 – 13.0
Pour Point, °F ASTM D97 32



Drydene Metalworking Fluids

Drydene Metalworking Fluids