Bluelab pH Pen | Hydroponic pH Meter | Bluelab – Bluelab USA
Compact Bluelab pH Pen delivers quick, reliable pH & temperature readings. Waterproof and durable, ideal for hydroponics, nutrient solutions & grow rooms.| Bluelab USA
Compact Bluelab pH Pen delivers quick, reliable pH & temperature readings. Waterproof and durable, ideal for hydroponics, nutrient solutions & grow rooms.| Bluelab USA
