Heating Collection

$OPTi Digital Handheld Refractometer - Green Energy & Heat Exchangers (Propylene Glycol/Ethylene Glycol)$

OPTi Digital Handheld Refractometer - Green Energy & Heat Exchangers (Propylene Glycol/Ethylene Glycol)

$Refractometer for testing glycol concentrations$

Eclipse handheld refractometer - Glycol

$Eclipse refractometer with refractive index scale$

Eclipse handheld refractometer - Refractive Index

$antifreeze refractometer with additional battery acid scale$

Eclipse refractometer for antifreeze and battery acid - Celsius model

$OPTi Digital Handheld Refractometer - 0-95 Brix (ATC)$

OPTi Digital Handheld Refractometer - 0-95 Brix (ATC)