Sealey Refractometer Antifreeze/Battery Fluid/Screenwash/AdBlue®

- Accurately measures the strength of battery fluid, screenwash, antifreeze and AdBlue® by measuring the refractive index of light passing through the mixture. - Suitable for synthetic antifreeze mixtures including long-life OAT (Organic Acid Technology), G13 and aqueous/urea content of AdBlue®. - Temperature corrected prism ensures accuracy. - Eyepiece with adjustable focus. - Simple calibration check using distilled water. - Supplied with pipette and storage case.