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Baker Instruments B3090 handheld refractometer with matte metal finish

Baker Instruments

Baker Instruments B3090 Coolant and Battery Refractometer

SKU CH-6387-JKQ76

Measures glycol freezing point with automatic temperature compensation

  • Monitors Ethylene and Propylene Glycol freezing points
  • Automatic Temperature Compensation maintains reading accuracy
  • New Baker Instruments B3090 refractometer for coolant and battery testing
  • Laboratory-grade tool designed for automotive fluid analysis
  • Manufacturer-direct shipment on orders of 75 or more

Battery Coolant Refractometer

The Baker Instruments B3090 measures the freezing point of Ethylene Glycol and Propylene Glycol coolants. It also checks battery fluid condition for automotive and industrial maintenance. Technicians use it to verify coolant protection levels quickly.

Automatic Temperature Compensation

Built-in ATC adjusts readings across ambient temperature changes without manual correction. This single feature determines whether the instrument delivers reliable data in a cold bay or a hot workshop.

Simple Optical Operation

Place a few drops on the prism, close the cover and read the scale through the eyepiece. No power source or calibration fluids are required. The only common error is applying too much sample, which blurs the boundary line.

How it compares

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Price $46.99
Cheaper than about 58% of the 734 comparable items (median $60.99).

Specifications

Product
Brand nameBAKER INSTRUMENTS

Questions about this item

How does the B3090 refractometer show the freezing point of coolant in a real workshop?

It reads the refractive index of the fluid and applies Automatic Temperature Compensation so the displayed freezing point is correct whether the sample is hot or cold.

What measurement standard does the Automatic Temperature Compensation follow and what range does it cover?

The ATC function adjusts the reading to a reference temperature automatically; the instrument is calibrated for both Ethylene Glycol and Propylene Glycol scales.

What does the B3090 need to sit on or connect to for bench use?

It is a hand-held optical unit that requires only a few drops of coolant on the prism and a light source; no power supply or mounting hardware is needed.

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