Series WPH2 Waterproof pH Testing Pen

pH and Temperature, Waterproof Large Display

The Series WPH2 pH Testing Pen accurately monitors pH and temperature levels in a variety of applications. This pocket-sized tester is ideal for pH level measurements in lab environments, industrial plants, or field environmental testing. It features an easy to replace electrode and automatically recognizes up to 3 calibration buffer solution ranges. Both pH and temperature, in both English and Metric units, appear on the large dual display. Both the electrode and battery compartment caps are sealed to provide an IP65 weatherproof rating.

Product Applications

  • Water quality testing

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: Same Day
Price: $64.00
Waterproof pH testing pen, range 0 to 14, ±.2 accuracy, .1 resolution. Same Day* $64.00 B Order
Ships: Same Day
Price: $75.00
Waterproof pH testing pen, range 0 to 14, ±.05 accuracy, .01 resolution. Same Day* $75.00 B Order


pH: 0 to 14; Temperature: 32 to 122°F (0 to 50°C).
WPH2-10: ±0.2 pH, ±1°C; WPH2-20: ±0.05 pH, ±0.5°C.
30 H x 18 W mm LCD dual display.
WPH2-10: 0.1 pH, 0.1°F/°C; WPH2-20: 0.01 pH, 0.1°F/°C.
Operating Temperature Limits:
32 to 122°F (0 to 50°C).
Storage Temperature Limits:
32 to 140°F (0 to 60°C).
Storage Relative Humidity Limits:
<90% RH.
Power Requirements:
(4) LR44 alkaline batteries, included, user replaceable.
One touch auto-calibration up to 3 points.
Enclosure Rating:
Detachable single junction, KCI filled glass.
3.9 oz (110 g).
Agency Approvals:


  • LCD dual display temperature and pH value with ATC
  • One touch for auto calibration
  • IP65 housing
  • Automatic buffer recognition to avoid errors during calibration


Model Number Description Usually Ships* Price Code Order
WPH2-RS Replaceable single junction sensor. Same Day $45.00 B Order

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