Seawater Hydrometers — IMPA 651341-651344

Seawater hydrometers are used on cargo ships, container vessels, tankers and offshore support vessels wherever the crew needs a quick, reliable check of seawater salinity and density — for example when monitoring ballast water, cooling systems, desalination plant feed or fish-hold seawater. The glass instrument floats a weighted, graduated bulb in a sample; the scale reads density relative to fresh water at 1.000, and typical seawater sits around 1.026, though it varies from 1.000 up to about 1.040 depending on the sea area. This lets the engineering and deck teams confirm that the water in a system is within the expected range without waiting for shore-based laboratory analysis.

Each hydrometer is made from clear glass with a weighted ballast bulb and an engraved or printed scale, so the reading stays legible in the engine room or on deck. The four items in this series cover the usual seawater range and are ordered individually by IMPA code — every code from 651341 to 651344 is available and priced separately, making it straightforward for purchasing officers and chief engineers to specify exactly the variant they need. The compact, shock-resistant form suits storage in a ship's instrument locker and routine use in a marine environment.

ALL-K MARINE Ship Store (ALL-K MARINE CO.,LTD) is a China-based wholesale and retail supplier of IMPA-coded marine stores and ship supplies. We hold the full IMPA 65 measuring-tool range in stock and supply the complete seawater hydrometer series 651341-651344, with supplier QC inspection on every batch and competitive wholesale and retail pricing. Send us your IMPA list for a 24-hour quote; we ship worldwide via freight forwarders and can arrange delivery to your local ship agent on request.