The Optical-Engine®

3 MISCO Digital Handheld Refractometer

The OPTICAL-ENGINE powers every MISCO Palm Abbe refractometer. And, at its core lurks a beast of a detector array, with no less than 1,024 high-definition elements, not the usual 128 element low-definition array used in other digital refractometers.

The Power of Resolution

With resolution of more than 3,256 pixels per inch, compared with 400 ppi, the MISCO Refractometer boasts 87% more detector elements for more than 8x the resolution. To put this in perspective, it is roughly the difference between a 2.5-megapixel camera and a 20-megapixel camera, providing 2x to 3x the measurement precision. Wow!

Do the Math…




per Inch





Sapphire Optics

Because only the best will do.

High-precision sapphire optics, the next hardest substance to diamond, provides a virtually scratch-proof measuring surface. With 4x the thermal conductivity of ordinary glass prisms, sapphire also improves the speed and accuracy of temperature correction. So why do competing refractometers use glass prisms?

Refractometer - Close Evaporation Cover
MISCO Digital Handheld Refractometer (Large)

Wait… What?

There’s Still More?

Stainless Steel Well

& Evaporation Cover

Rounding out the features is a stainless-steel sample well and a protective evaporation cover. No other refractometer offers all these features.

Large Easy-to-Read LCD Display.

Every Palm Abbe digital refractometer features a large easy-to-read 24-character by two-line backlit LCD display, which shows the unit of measure and reading value for each measurement. Compare this to the typical three “digit” unlit display on competing refractometers. The net result is an instrument that is more rugged and precise than anything else available. A rugged tool for precision work in the real world, dependable, built to last, and proudly made in the USA.

Extensive Scale Library

The Palm Abbe refractometer can be factory programmed with tens of thousands of scale combinations from the most extensive refractometer scale library on the planet. What is a Scale? Think of it as a special program that converts refractive index into your measurement units of choice, for your particular fluid. Scales do the conversion work, so you don’t have to.

Refractometer - Add Sample

Never Used a Refractometer?

It’s ridiculously easy.

The Palm Abbe refractometer is fast, convenient, and easy to use. The user interface consists of two buttons, one to take readings and the other to step through various menu options.

Simply place a drop or two of fluid in the stainless steel well and press a button. The custom-designed microprocessor delivers a nearly instantaneous readout in your selected unit of measure. Nonlinear temperature correction is automatic and ensures that fluids are measured accurately.

In most cases, The MISCO refractometer automatically calibrates itself to water and is ready to use in seconds. No screws to turn and nothing to adjust.

How Does a Digital Refractometer Work?

Inside the OPTICAL-ENGINE, light from a high-intensity LED is focused from beneath onto your fluid, sitting on the sapphire measuring surface in the refractometer’s stainless-steel sample well. Depending on the refractive index of the fluid, some of the light is lost into the fluid and some is reflected towards the high-definition detector array. The position of a shadow-line projected onto the detector array is directly related to refractive index. The reading is converted into refractive index, temperature corrected, and then automatically converted into the unit of measure that you selected.

MISCO How Refractometer Works

Rubber Armor Jacket.

The Jacket that Fits Like a Glove; for graduates of the school of hard knocks.

Adding the optional Rubber Armor Jacket to your refractometer increases its durability and provides a better grip. Made of high-grade silicone rubber, the Rubber Armor Jacket is custom fit and will help protect your refractometer from minor bumps and scratches. The form-fitting Rubber Armor Jacket fits the Palm Abbe PA201, PA202, and PA203 refractometers and comes in your choice of black, gray, or safety orange.

Virtually Indestructible

Just More Proof you
Will Love this Refractometer.

Our rugged Proof-Case is waterproof, crush-proof, dirt-proof, dust-proof, drop-proof, rain-proof, snow-proof, sink-proof, even goof-proof. It is perfect for providing an additional level of protection when you use your refractometer in demanding environments. Compatible with Palm Abbe refractometers with or without the Rubber Armor Jacket.