Can Max-Duct Options:Can Max-Duct 4" Vinyl, 25 ft Formulation Hanna pH buffers are

Formulation Hanna pH buffers are made of potassium dihydrogen phosphate and disodium hydrogen phosphate and are standardized with a pH meter calibrated to NIST primary standard buffer solutions (NIST 186Ie & 186IIe and NIST 158g S

THE PONDMASTER HYDRO-AIR SUBMERSIBLE WATER & AIR PUMP has been designed to handle virtually any application where water has to be moved

The RH sensing element is protected against dust

where particles and dirt like to cluster

Model 5558 Control

Can Max-Duct Options:Can Max-Duct 4" Vinyl, 25 ft Formulation Hanna pH buffers areMAX DUCT PVC is simply the best! Possibly the strongest REUSEABLE duct on the market with a cost similar to the leading competitor's regular 3 ply duct. MAX DUCT is manufactured with triple foil laminate with very durable black PVC with UV inhibitors coating in 25' lengths and complete with 2 clamps for ease of installation.