Description
Apera Instruments PH60 MS pH Tester Kit for Small Volume or Test Tubes with LabSen 246 5 ATC Semi Micro pH Electrode low range ammonia tester Hydroponics nutrient solution monitoring HVAC calibration MA925B 3 the HI981412 00 delivers Hydroponics nutrient solution monitoring Power Source: AC 110 V – 220V Rechargeable Lithium Ion Battery