Eco-pH Digital pH Test Pen

Eco-pH Digital pH Test Pen
Our Price$109.99
Usually ships the same business day
We're sorry, We are currently out of stock on this item

Product Details

Out of Stock

Electronic pH pens are far more accurate than guessing at color charts. This Trans Instruments Koi Medic - pH pen is simpler to use and more affordable than previous models. Water resistant, shock resistant, automatic shut off, low battery indicator. The pH pen is supplied with a sturdy plastic carrying case, instructions, and a small bottle of calibration solution to ensure accuracy. 

Additional Information:

pH is a unit of measure that describes the degree of acidity or alkalinity of a solution. It is measure on a scale of 0 to 14. Technically, pH is defined as the negative logarithms of the hydrogen ion activity or concentration.


0 to 14 pH

0.1 pH 
± 0.2 pH
Calibration Points: One touch button
Battery Type:
4 x 1.5V button cell (Alkaline A76 or equivalent) (Not Included)
Battery Life:
Approx. 150 hours
Automatic Shut-off:
Approx. 15 minutes
Automatic Temperature Compensation:
Operating Temperature:
0 to 50°C or 32 to 122°F
Product Dimension Size (LxWxH):
170mm x 32mm x 15mm

Product Weight:

Weighs less than 3 ounces


30 Day Limited Mfg Warranty


Instruction Manual .PDF

Product Reviews

5 stars based on 1 review 
Tampa fl
This is very easy to calibrate and use. I use it in my 4000 gallon Koi pond and my tropical fish aquarium. Great price and fast delivery. The only problem is 123ponds does not stock 7.0 calibration fluid so you have to order from another source. Highly recommend this for accuracy and ease of use.
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Estimated Delivery Date

All of our in-stock products usually ship the same or next business day. The table below will show you an estimated* date your order will arrive. See special notes below

Shipping Method Approximate Processing Time Approximate Shipping Time Estimated Delivery Date
Eco-Saver Shipping 1-3 business days if ordered by 12:00 Noon EST 2-10 Business Days
Ground Service Same to Next day if ordered by 1:00 PM EST 2-7 Business Days
3-day Select Same day if ordered by 1:00 PM EST 3 Business Days
2nd Day Ai Same day if ordered by 1:00 PM EST 2 Business Days
Next Day Air Same day if ordered by 1:00 PM EST 1 Business Day
Next Day Air Saver Same day if ordered by 1:00 PM EST 1 Business Day by End of Day
UPS Standard - Canada Within 24 to 72 hours 5-10 Business Days

* Delivery dates are estimates only and can vary due to backorders, order processing delays, payment information, customs clearance, and various shipping delays that may be out of our control. Please refer to the specific product page which will show additional information, as some items may require additional shipping time or ship directly from our suppliers. After we receive your order, an order confirmation email is sent automatically from within our website which will show stock status for the item(s) on your order. Business days are Monday - Friday with Holidays excluded. When your order ships, we add your e-mail address into the UPS software which will send you tracking information, so you can track shipment status online, anytime! Here is a link to our complete shipping information including a UPS transit map: Click Here