Pocket Digital Refractometer - Automotive cube MERV 10 Plus Carbon air

MERV 10 Plus Carbon air filters are comparable to air filters with the rating of MPR 900-1000

Available in various styles

An Xtrasun convertible ballast means extra flexibility for your gardening

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Pocket Digital Refractometer - Automotive cube MERV 10 Plus Carbon airMeasure concentrations in propylene gycol, ethylene gycol, battery acid and windshield washer fluid in the field with laboratory accuracy. As small, light and simple to use as optical refractometers, but with the precision of a digital readout. Reads samples as small as 1 ml. Sample temperature is initially displayed on the large LCD followed by the measurement results. The sophisticated microprocessor provides automatic calibration, automatic