12V Rechargeable Battery Pack 10000mAh, Portable 5V/ 9V/12V Power Bank(12V 10000mAh / 9V13000mAh / 5V 24000mAh) DC Output Lithium ion Battery Pack for LED, CCTV Camera, Router, Breast Pump (1)
KWD 29
1413 μS/cm Calibration Solution, Conductivity Salt Standard Buffer Solution for 5 in 1 Salinity Tester, EC Meter, TDS Meter, 7 in 1 Multi-Parameter Tester Calibration
KWD 5
15-Pack pH Calibration Powder Kit – High-Accuracy Buffer Solutions (pH 4.01, 6.86, 9.18) with Mixing Bottles – Universal for All pH Meters (5)
KWD 4.500