HomeProduct Item model numberPENCON PENCON Filter Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Added to wishlistRemoved from wishlist 0 Add to compare Bluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM… Added to wishlistRemoved from wishlist 0 Add to compare $67.54