Model TDS2-10 Waterproof Conductivity/TDS Testing Pen

Conductivity and TDS; ±1% FS Accuracy

The Model TDS2-10 Conductivity/TDS Testing Pen monitors both conductivity and total dissolved solids in streams, rivers, or any other body of water. It picks up impurities and dissolved solids while checking the conductivity at the same time. 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 conductivity/total dissolved solids and temperature measurements simultaneously. Since change in temperature can affect accuracy, the TDS2-10 has automatic temperature compensation. Batteries included in packaging.

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

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Model Description Usually Ships* Price Code Order
Ships: Consult Factory
Price: $93.00
Conductivity/TDS Testing Pen Consult Factory* $93.00 B Order


Wetted Materials:
ABS plastic and 316 SS.
Conductivity: 0 to 1999 uS or 0 to 19.99 mS; TDS: 0 to 1999 PPM or 0 to 19.99 PPT.
±1% FS.
30 H x 18 W mm LCD dual display.
Conductivity: 1 uS or 0.01 mS; TDS: 1 PPM or 0.01 PPT.
Temperature Limits:
32 to 122°F (0 to 50°C).
Power Requirements:
(4) 1.5 V LR44 alkaline batteries, installed functional, user replaceable.
Enclosure Rating:
4.3 oz (115 g).
Agency Approvals:


  • Large dual display temperature and conductivity or TDS with ATC
  • Water proof overlay
  • Adjustable TDS factor from 0.4 to 1.0
  • Auto power off
  • Built in temperature compensation
  • Quick response and easy to calibrate

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