Limited Time Special - Save 30-40% on ThermoPop     Details

Waterproof pH Meters

Model #8680/8681/8682

Auto-Temp Compensation (8681 & 8682 only)
One-Touch Auto-Calibration
Up to 3 point cal 4,7,10
Cal values adjustable
Data Hold Function
Auto Power-Off
°C/°F Switchable (8681 & 8682 only)

Limited Time Special on 8680:
Now $29 Normally $39




pH BuffersNIST-Certified pH Buffers
For best results it is recommended to calibrate pH meters regularly. Available in 500ml bottles and 20ml pouches individually and in kits. more info
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These convenient and portable pen-style pH meters are designed for fast and accurate pH measurements in any environment. Choose from three models to fit your application. Each unit includes a one-touch calibration feature at 3 points and a waterproof rating to IP65. They fit comfortably in your hand and conveniently store away in your shirt pocket.

8680—Simple to use and waterproof. Includes data hold, one-touch auto-calibration at 4, 7, and 10 pH, and auto power-off.

8681—Choose this model for professional performance, durability and a great price. Auto temperature compensation ensures good accuracy. Dual display shows temperature and pH at the same time with accuracy to ±0.2pH.

8682—Easily your best value in a pocket-sized, waterproof pH pen with high precision. Auto temperature compensation with excellent accuracy. Dual display shows temperature and pH at the same time with accuracy to ±0.05pH.

Range 8680: 2.0 to 12.0 pH
8681: 0 to 14 pH
8682: 2.0 to 14.0 pH
Accuracy 8680: ±0.3pH
8681: ±0.2pH; ±1.8°F (±1°C)
8682: ±0.05pH; ±0.9°F (±0.5°C)
Resolution 8680: 0.1pH
8681: 0.1pH; 0.5°F, 0.5°C
8682: 0.1pH; 0.1°F, 0.1°C
Auto Temperature Compensation 32 to 122°F (0 to 50°C)
Water Resistance IP65
Environmental Range 32 to 122°F (0 to 50°C), 0 to 80% RH
Battery Button Cell LR44 x 4
Dimensions 1.42" x 6.3" x 0.89"
Ph Buffers

pH Buffers

Model: Various

  • Standardized reference solution
  • 20ml or 500ml sizes
  • Purchase individually or in assorted packs
Standardized NIST-Certified pH references within 0.01pH @ 77°F (25°C). Freshness dated and labeled. Can be bought in 20ml or 500ml bottles or in assorted packs. More Info



Zip Wallet

Protective Zipper Wallet

Model: 830-001

  • Vinyl pouch with zip closure
  • Light padding for storage
  • Carrying loop
Padded vinyl pouch with zip closure. Stores Thermapen nicely (with or without silicone boot) with light interior padding. Great value!


LR44 Batteries

Model: LR44

  • LR44 batteries x 2
  • 1.5V
Package of 2 batteries. Standard LR44 size.

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Gift Wrap

Gift Wrapping

We'll wrap your gift in our custom gift paper, trimmed with a bow and gift tag. The rich, graphite and silver combination is suitable for any occasion or anybody.

Enter a custom message for the handwritten tag (Up to 50 characters). Cost for wrapping is $4.99 per item. Each item wrapped separately. Selectable in the order info where available. Some items can not be wrapped.

Ordering more than one of the same item but don't want them all wrapped? Just add each item you want wrapped to your shopping cart individually and select the wrapping option. Add your custom greeting for each wrapped item separately as you add the item to your cart.

Gift wrap orders are shipped in a plain box without packing slips. We're trying our best to keep the surprise.