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For detailed mixing instructions when combining with other products
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Use it indoors with grow lights or outdoors in natural light
Automotive Coolant Refractometer with ATC Tents & Tarps For detailed mixing instructions whenThe antifreeze refractometer can be used for measuring the freezing point of glycol, antifreeze, coolant and battery acid. This refractometer features Automatic Temperature Compensation (ATC), and can also be used for checking the condition of electrolyte solution batteries. Measures the freezing point of automobile antifreeze based on ethylene glycol or propylene glycol. This is a quality optical instrument that includes a soft carrying case, bulb
