The VST LAB Coffee III refractometer is used for measuring coffee & espresso TDS.
 
The advanced fourth-generation handheld instrument provides laboratory precision in the palm of your hand. 
 
Accuracy and precision of the VST Lab coffee refractometers are comparable to state-of-the-art dehradration ovens, and rival benchtop laboratory refractometers with Peltier trays.  VST's latest Lab III refractometer has a typical accuracy of +/- 0.02% and worst case percision of +/- 0.1%. 
 
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Designed for the rapid and accurate determination of coffee concentration, these instruments will automatically correct for temperature within the range of 15-40 degrees celcius.  When used and cared for properly, the refractometer will provide years of trouble-free service.
 
Refractometer kit includes:
- Hard sided carrying case for refractometer machine - protects during transit, keeps temperature stable
- Bag of 50 syringe filters and 5 luer-lock syringes - for pre-filtering espresso or coffee brewed using metal filters
- Bag of 10 pipettes and alcohol swabs - designed to transfer samples without contamination to ensure accuracy