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CONTROL YOUR BREWERY WITH ONE REFRACTOMETER
Hydrometers are nice
5040 Refractive Index Refractometer - NO ARMOR JACKET
0°C Calibration Liquid/Medium Distilled water
You've found the unit to test the concentrations of Glycerin in Water and determine your pipes FREEZE POINT
Hungry Koi Extra Large Solar Pond Automatic Feeder Carp, Catfish Salinity Refractometer CONTROL YOUR BREWERY WITH ONEItem Description: Hungry Koi EXTRA LARGE SOLAR POWERED Automatic Pond Feeder EXTRA LARGE FOOD HOPPER! Ideal for MANY fish to be fed over a short period of time, or a few fish for a longer duration KOI CATFISH SALMON TILAPIA EXTRA LARGE food hopper holds approximately 11 pounds of MEDIUM sized pellets Outside Use 6v Rechargeable Battery via Solar Indoor Use DC Supply Charger included Feed up to 10 times per day Adjustable feeding time (1 to 59 seconds)