Premium Water Hardness Test Kit | Fast and Accurate Hard Water Quality Testing Strips for Water Softener Dishwasher Well Spa Pool, etc. | 0-425 ppm | Calcium and Magnesium Total Hardness (150 Strips) 150 Strips auspowers_batchone but please use 5V/2A-3A output

but please use 5V/2A-3A output usb power adapters

We are professional on design and produce office products

Standby 11-13 MA

Clear design

The eartip come in 3 sizes(Small Medium and Large) that conforms to the shape of either ear for all day stable fit

Premium Water Hardness Test Kit | Fast and Accurate Hard Water Quality Testing Strips for Water Softener Dishwasher Well Spa Pool, etc. | 0-425 ppm | Calcium and Magnesium Total Hardness (150 Strips) 150 Strips auspowers_batchone but please use 5V/2A-3A outputPremium Water Hardness Test Kit Fast and Accurate Hard Water Quality Testing Strips for Water Softener Dishwasher Well Spa Pool, etc. 0 425 ppm Calcium and Magnesium Total Hardness (150 Strips) Product Features QUICK AND ACCURATE Save time and get accurate test results within seconds. Simply dip the strip into the water and compare it to the large color chart on the bottle. No need to visit a store or wait for someone else to test the quality of your