Buy On Amazon
Private Label
Export
PenACCESS
Customer Log in
Automotive
Antifreeze Inhibitors
Performance Products
Brake Maintenance
Cooling System Maintenance
Detail Products
Electrical System Maintenance
Fuel System Maintenance
Functional Fluids & Sealers
Light Duty Diesel
Lubricants & Penetrants
Oil System Maintenance
Powertrain Maintenance
Power Steering System Maintenance
Professional Tools
Shop & Auto Cleaners
Specialty Cleaners
Specialty Products
Installer Products
Fluid Exchange Equipment
Professional Tools
Professional Service Kits
Super-X Products
Fuel & Oil Additives
Functional Fluids
Maintenance Products
Car Care Council
Heavy Duty
Antifreeze Inhibitors
Brake Maintenance
Cooling System Products
Cooling System Cleaners
Cooling System Testing
Cooling System Filters
Supplemental Coolant Additives
Detail Products
Electrical System Maintenance
Fuel Doctor
Fuel & Winter
Cold Weather Products
Cold Weather Diesel Treatments
Diesel Fuel Testing
Light Duty Diesel
Year Round Fuel Treatments
Lubricants, Penetrants & Coatings
Oil System Maintenance
Shop & Auto Cleaners
Specialty Cleaners
Marine
Cooling System Products
Cooling System Maintenance
Cooling System Testing
Supplemental Coolant Additives
Detail Products
Electrical System Maintenance
Fuel System Products
Diesel Fuel Testing
Light Duty Fuel
Multi-Purpose Cleaners
Year Round Diesel Treatments & Cleaners
Lubricants, Penetrates and Coatings
Multi-Purpose Cleaners
Specialty Products
Resources
Cooling System Tech Facts
Fuel Doctor
Technical Bulletins
Winterize Your Vehicle
SDS
Penray® Cooling System Testing
Home
Heavy Duty
Cooling System Products
Cooling System Testing
COOLANT REFRACTOMETERS (CTX1, CTX2)
PTK103 COOLANT LAB TEST KIT
TS100 FILL-FOR-LIFE™ HEAVY DUTY 2-WAY TEST STRIPS
TS200 UNIVERSAL 3-WAY TEST STRIPS
