Metalworking Fluid Measurement
Optical Refractometers for Concentration Measurement

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Refractometers

pH Strips

Hardness Testing Sticks

Further Details

Optical Refractometers Measure Concentration

Zebra Specialist Refractometer is the Most Precise

Range 0-15 or 0-30%
Solid, bright scale built for the quality conscious machinist
Integrated drip feed for easy, one-handed sampling
Large, easy-to-handle body with gripping studs
EZ comfort eye cushion and adjustable focus for easy reading
Hand-operated zero adjust with locknut
Anti-roll support
One piece, easy-to-replace sample cover
Precision accuracy range
European precision and craftsmanship
Carrying case included

Refractometers Measure Concentration & Oil Emulsion

Concentration is the position of the horizontal line on the brix scale and is shown in the diagram below.

Oil emulsion is signified by the blurriness of that line and is shown in the diagram above. As tramp oils are beaten into the coolant, the line will become blurrier. When the line is so blurry that an actual line is not visible, it is time to change the coolant.

REFRACTOMETERS

Basic Refractometer for Every Machine Cell

Range 0-10 or 0-32%
Prism aperture lets in a lot of light
Diamond-knurled sleeve for good gripping
Comfortable eyepiece with adjustable focus for easy reading
Auto temperature compensation for shop areas with varying temperature
Average use accuracy range
Carrying case with sampler included

pH Strips Measure Chemical Balance

Over time, acids produced by bacteria and misuse will degrade the foundation of your coolant’s chemistry, making it lose its effectiveness. By measuring pH, you will be able to correct any imbalance before it becomes a problem. Maintaining the integrity of your coolant foundation prevents unstable emulsions, bacterial contaminaton, and rust.

Hardness Testing Sticks Prevent Coolant Pudding and Foam

Tap water contains minerals that can harm your coolant. Split emulsions, grease, scum, or ‘pudding’ are all dangers of mineral buildup in your sump.

Dip into the fluid and compare colors
A must for every shop
50 sticks per bottle
Non-hazardous
Test for hardness before it causes you grief!

pH Test Strips for Quick-Sampling

Simple way to measure pH on the fly
Measures pH range of 6.5 - 10.0
100 Strips per box

Refractometer Selection Guide

Need help selecting? Click here.

Model	Part Number	Brix Scale*	Graduation	Accuracy	Weight	Dimensions


Specialist Refractometer	OPT15 OPT30	0-15 0-30	Fifths Fifths	± .01% ± .01%	9.7 oz. 8.6 oz.	2” dia., 9.25” long 2” dia., 7.5” long


Basic Refractometer	OPT10 OPT32	0-10 0-32	Tenths Fifths	± .10% ± .10%	9.9 oz. 9.3oz.	1.5” dia., 8” long 1.5” dia., 7” long


Replacement Parts	OPTX45 OPTX10	Replacement prism cover for OPT15, OPT30 Replacement prism cover with pin for OPT10, OPT32

*Check coolant product data to determine how your coolant will read on the Brix Scale.

pH & Hardness Selection Guide

Model	Part Number	Description	Range	Accuracy


pH Strips	XPHPS09	pH Testing Strips	6.5 - 10.0	±0.2 pH


Hardness Testing Sticks	XWT50	Hardness Test Sticks	0-1000 ppm

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