---
product_id: 14026398
title: "Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium"
brand: "keentop"
price: "$24.20"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/14026398-water-ph-test-pen-ph-meter-ph-009-pen-atc
store_origin: US
region: United States of America
---

# Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium

**Brand:** keentop
**Price:** $24.20
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium by keentop
- **How much does it cost?** $24.20 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/14026398-water-ph-test-pen-ph-meter-ph-009-pen-atc)

## Best For

- keentop enthusiasts

## Why This Product

- Trusted keentop brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

PH pen with and without tape Warming Warming, with warming are ATC logo, more accurate detection, error ± 0.1, with no signs warming is ATC. Pocket digital pen pH meter, the introduction of advanced technology and imported components, greatly reducing the volume, reduce costs, maintain the original good quality, so that the use of pH meter gained popularity. Pocket Digital PH Meter is a classic brand of pocket digital pH meter, high stability, high reliability, easy to use, inexpensive and popular around the world, the majority of users of all ages. 
 
 The main technical indicator: 
 
 Measuring range :0.00-14 .00 PH 
 Accuracy: +/- 0.1PH 
 Resolution: 0.1PH 
 Operating temperature: 0 oC~ 50 oC 
 Battery: 3X1.5V (AG13 button battery type) (not including batteries) 
 Dimensions: 142mm (L) × 29mm (W) × 15mm (H) 
 Weight: 51 g 
 
 
 PH meter calibration while increasing standards: 
 
 1, the pH electrode into the pH value of 6.86 (25 oCc under standard mixed phosphate buffer solution, and gently shake. 
 2, with a small screwdriver adjust the calibration potentiometer until the display value and the standard buffer solution at ambient temperature ph values. 
 3, the electrodes into pH4.00 stupid phosphorus or potassium acid borax pH9.18 standard buffer solution. 
 4, after about two minutes or so. Shows the pH value of the buffer value is compared to the error should be within the allowable range. 
 
 Note: (without the retail box,tks for your well understanding!tks a lot!) 
 
 In the following cases, PH meter must be recalibrated: 
 After calibration has been used (or place) for a long time; Frequent use of special electrodes; 
 Accuracy requirements are relatively high.

## Features

- 1, the pH electrode into the pH value of 6.86 (25 oCc under standard mixed phosphate buffer solution, and gently shake.
- 2, with a small screwdriver adjust the calibration potentiometer until the display value and the standard buffer solution at ambient temperature ph values.
- 3, the electrodes into pH4.00 stupid phosphorus or potassium acid borax pH9.18 standard buffer solution.
- 4, after about two minutes or so. Shows the pH value of the buffer value is compared to the error should be within the allowable range.

## Images

![Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium - Image 1](http://ecx.images-amazon.com/images/I/41o9FoD%2Bs-L.jpg)
![Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium - Image 2](http://ecx.images-amazon.com/images/I/41iDCmVEYWL.jpg)
![Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium - Image 3](http://ecx.images-amazon.com/images/I/31W%2BO6WMFaL.jpg)
![Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium - Image 4](http://ecx.images-amazon.com/images/I/31ceyFy5GhL.jpg)
![Water pH Test Pen pH Meter pH-009 Pen ATC pH Value Test Pen Tester Tds Tester 0-14 Pocket Aquarium - Image 5](http://ecx.images-amazon.com/images/I/41j-0w3pvpL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/14026398-water-ph-test-pen-ph-meter-ph-009-pen-atc](https://www.desertcart.us/products/14026398-water-ph-test-pen-ph-meter-ph-009-pen-atc)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-13*