Review on 📏 HM Digital 1000PPM Calibration Solution: Accurate and Reliable Calibrating Formula for Precise Measurements by Andre Pendergrass

I recently bought a TDS meter (HM Digital TDS-3 Handheld TDS Meter With Carry Case, http://www.amazon.com/gp/product/B000VTQM70/ ref= cm_cr_ryp_prd_ttl_sol_11) for home use. This 1000 ppm TDS calibration fluid is required for the flow meter. Although the meter's description says it doesn't require calibration, it's always a good idea to calibrate it. It comes in a very durable plastic bottle that is sealed. Device. So I also bought another calibration liquid (HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml. Volume: http://www.amazon.com/gp/product/B001VE99X8/ref=cm_cr_ryp_prd_ttl_sol_4). People have mentioned that you can make calibration fluid at home by dissolving a known amount of sodium chloride in water. I would like to point out that this would not be a good idea. First, the water itself is not pure and you do not know its PPM value. Second and last, it's impossible to weigh 0.1-0.5g on every scale we have at home. SO spends some money and buys it. You will not regret it. I calibrated the meter using bot solutions and then measured several liquids with known ppm values and the readings I got were pretty accurate (within 5% of the true value)! I STRONGLY RECOMMEND YOU BUY THIS CALIBRATION FLUID IF YOU BUY A TDS METER!