Silicone Anti-Drain Back Valve — Ensures immediate clean oil supply on cold starts

and that chemical smell in your shower

Durable black construction – built for long-term lab and field use

Spherical Tip: 8

Barcode: 624112162861

Bluelab Mixed Calibration Solution Sachets – Box of 30 (pH 4.0, pH 7.0, EC 2.77 & KCl) sediment water filter Silicone Anti-Drain Back Valve —An easy way to keep your pH and EC probes or pens accurate and working at their best Features: Easy to open single use sachets of calibration and storage solutions Quick tear open sachets are suitably sized for on the go calibration and probe storage Contains 30x 18 ml 0. 6 fl. oz. sachets Mixed includes 10x pH 4. 0, 10x pH 7. 0, 5x 2. 77 EC, 5x KCl Storage (MIX18B) Bluelab Solution Sachet 30 box delivers four essential calibration solutions in