$78 1.81 GEM Gemstone Refractometer Refractive Index Fluid, 1.8ml Vial Premium Cover Plate 30ml - Used together Here's

30ml - Used together Here's some of the Hanna Literature: http://www

The condenser should be oiled in a low position and

you need to do it more frequently or less frequently

Subsequently

Propylene Glycol Refractometer Specs:

$78 1.81 GEM Gemstone Refractometer Refractive Index Fluid, 1.8ml Vial Premium Cover Plate 30ml - Used together Here'sItem Description: 1. 8ml Vial of 1. 81 Refractive Index for Gem Refractometers (this vial is about HALF full) American Made and ARSENIC FREE! THIS IS THE BEST FLUID AVAILABLE FOR GEM REFRACTOMETERS! This product is the non poisonous version of the classic Gem Refractive Index Fluid; Diiodomethane (methylene iodide). This product is also made in the USA! The most important aspect of the Refractometer is the quality of the fluid and its Refractive