Model WSM-10 Waterproof Salinity Testing Pen

Temperature and Salinity; ±1% FS Accuracy

The Model WSM-10 Salinity Testing Pen can measure salt concentration of saltwater aquariums, determine the suitability of drinking water, and be used for ecological monitoring of aquatic habitats. This pocket sized tester is constructed of a durable ABS plastic waterproof housing and 316 SS electrodes to protect against corrosion. A large LCD display is easy to read and shows both the salinity and temperature measurements simultaneously. Since change in temperature can affect accuracy, the WSM-10 has automatic temperature compensation to achieve ±1% accuracy. Batteries are included in packaging.

Product Applications

  • Measuring water quality for drinking water and saltwater aquariums
  • Ecological monitoring of aquatic habitats

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

Model Description Usually Ships* Price Code Order
Ships: Consult Factory
Price: $67.00
Salinity testing pen. Consult Factory* $67.00 B Order


Wetted Materials:
ABS plastic and 316 SS.
0 to 10 ppt (NaCl) or 10.1 to 70 ppt (NaCl).
±1% FS.
30 H x 18 W mm LCD dual display.
0.01 ppt or 0.1 ppt for 0 to 10 ppt range and 10 to 70 ppt range respectively.
Temperature Limits:
32 to 122°F (0 to 50°C).
Power Requirements:
(4) 1.5 V LR44 alkaline batteries, included, user replaceable.
Enclosure Rating:
4.3 oz (115 g).
Agency Approvals:


  • Dual display temperature and salinity with ATC
  • Waterproof overlay
  • Quick response and easy to calibrate
  • Built in NaCL temperature coefficient

Product Literature


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