Portable type Marine Low Range Nitrite Checker HC HI767 is accessible with LED based fixed wavelength. Its silicon photo detector is useful to maintain checking accuracy like any professional apparatus. Compact in shape, Marine Low Range Nitrite Checker HC HI767 is available with in built timer. This easy to carry instrument can easily integrate with saline water. Run by AAA battery, this nitrite checker is equipped with silicon photocell based photometer with LED based light source. This apparatus tends to shut off automatically after 20 minutes in case it is in stand by position.