---
product_id: 70213043
title: "SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC"
brand: "apera instruments"
price: "$259.06"
currency: USD
in_stock: true
reviews_count: 8
category: "Apera Instruments"
url: https://www.desertcart.ec/products/70213043-sx620-ph-pen-tester-kit-with-0-01-ph-accuracy
store_origin: EC
region: Ecuador
---

# IP57 waterproof & dustproof 0.01 pH accuracy 3-point auto calibration SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC

**Brand:** apera instruments
**Price:** $259.06
**Availability:** ✅ In Stock

## Summary

> 🔬 Elevate your pH game with precision and portability!

## Quick Answers

- **What is this?** SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC by apera instruments
- **How much does it cost?** $259.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/70213043-sx620-ph-pen-tester-kit-with-0-01-ph-accuracy)

## Best For

- apera instruments enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Portable:** Slim, replaceable 8mm probe fits test tubes and comes in a sleek pocket-sized kit.
- • **Built to Last & Float:** IP57 waterproof design floats on water, so accidental drops won’t sink your workflow.
- • **Effortless Calibration:** Automatic 3-point calibration ensures reliable results with zero hassle.
- • **Precision that Matters:** Ultra-fine 0.01 pH resolution for lab-grade accuracy in every test.
- • **Smart Temperature Compensation:** Auto adjusts readings from 0-60°C for consistent accuracy in any environment.

## Overview

The Apera Instruments SX620 pH Pen Tester Kit delivers lab-level 0.01 pH accuracy with automatic 3-point calibration and temperature compensation from 0-60°C. Its slim, replaceable probe fits test tubes, making it ideal for hydroponics, aquaculture, pools, and beverage testing. The IP57 waterproof, dustproof design floats on water, ensuring durability in the field. Complete with premixed calibration solutions and a portable case, it’s a compact, professional-grade tool for precise pH measurement.

## Description

Aprea Instruments SX610 pH Pen Tester is designed for reliable measuring performance with a single-button easy operation in a mini body. A cost-effective choice for your general-purpose pH testing, including hydroponics, aquaculture, water treatment, pools & spas, beverage making, education, etc. The 8mm slim pH probe is replaceable and suitable for test tube measuring. Easy 1-3 point Auto. Calibration (7. 00, 4. 00, 10. 01) and 0 to 60˚C Auto. Temperature Compensation (ATC), 0. 01 pH/0. 6˚C accuracy with 0 to 14. 00 pH measuring range. Intelligent functions: switch from ˚F to ˚C, automatic power-off, low battery alarm, pH probe invalidation reminder (reminds you to replace the probe for reliable performance). The meter comes with a complete kit of premixed calibration solutions (7. 00, 4. 00, 10. 01), storage solution (3M KCL), CR2032 lithium batteries all in a small pocket carrying case. IP57 waterproof and dustproof floats on water, so you don’t have to worry if it falls in water by accident. The product is CE and RoHS certified, and is manufactured under an ISO 9001: 2015 certified quality system. Do NOT store the probe in distilled water or deionized water since it will cause damage to the electrode. Only use distilled water for rinsing the pH probe.

Review: Excellent instrument - Easy to use, appears to be accurate and truly beats the cheap $10-30 meters that are unstable and can take minutes to indicate a fixed reading. This instrument gives a presumably accurate result almost immediately. Supplied calibrating solutions are sparse but can evidently be reused if the probe is carefully cleaned as directed. A single multi-function button that works well replaces the two or three often present on other models. Allegedly waterproof, and the probe is replaceable. Sealing probe cap holds supplied soaking solution to protect and prolong life of electrode. Extra batteries supplied are a plus. Good instructions and warranty. Factory calibrated and even has its own serial number. Not a professional device that can cost hundreds, but certainly worth its price.
Review: Garbage, don't waste your money - At first, I thought this was a good product. It seemed to calibrate easily. It worked for about 2 years and then it didn't . It acted like the batteries were dead, it would turn on and then turn itself off like the batteries were low. I took the batteries out and tested them and they were nearly perfect. I put them back in, same issue. I switched to new batteries same thing. Then it finally started turning on and the ph counter was swinging all around up and down like crazy before maxing out at 15. Turning it on and off many times it did more inconsistent crap. Then I thought it was working again so I tried to calibrate it with ph 4 solution. It registered it as 10 ph and calibrated to that. Tried the 7 ph solution it calibrated to 10 again. I contacted support and they told me I needed a new probe. I check the price on their website $48 plus shipping for a new probe $55 on desertcart. So a new meter is $69 and a replacement probe is $55? Get real and I don't even know if the probe is the problem. I started reading comments on the replacement probe and many were stating they had the same exact weird problem I had. They had bought the probe in hopes of fixing their meter only to find out that it was the electronics, not the probe. Then when they contact support they are told it is their fault, they must have gotten the meter wet. I'm now not sure how accurate this meter is because I have no way to test it anymore and it didn't occur to me in the past it could have been off. But looking back now it did seem to almost always give similar results when testing soil ph. I'll be going back to the cheapo Ph meters until I can get the money to buy a really nice one that is not made in China. I could have bought 7 cheap ph meters for the price of this junk. I thought I would try moving up to a better meter. I should have spent a little more at the time to get something of true quality. The cheap ones work as well as this one, but this had the fancy skinny probe to fit in test tubes so I could use smaller sample sizes. It just sucks this wasn't the quality product I was hoping for. Avoid this Junk meter. If replacing the probe worked I'd try it, but I don't want to spend $55 just to have to turn around and send it back. This thing is acting like it is an electrical issue, not a probe.

## Features

- The smallest pH pen with reliable testing performance for regular liquid e. g. pools, hydroponics, aquaculture, cooling towers, beverage making, body fluid, etc.
- 0. 01 pH accuracy; Automatic 3-point calibration; 0-60˚C Automatic Temp. Compensation
- Slim replaceable probe, suitable for test tubes
- Intelligent functions: switch from ˚F to ˚C, automatic power-off, pH probe invalidation reminder (remind you to replace the probe for better performance)
- Complete kit: 3 types of premixed calibration solutions (4, 7, 10) and storage solution (3M KCL) all in one portable case

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BDVL66C |
| Additional Features | Waterproof |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #218,994 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #217 in Lab pH Meters |
| Brand | Apera Instruments |
| Brand Name | Apera Instruments |
| Color | Blue |
| Connectivity Technology | Usb |
| Customer Reviews | 3.7 out of 5 stars 212 Reviews |
| Display Type | Digital |
| Global Trade Identification Number | 00810214030478 |
| Included Components | SX620 pH Pen Kit |
| Indoor Outdoor Usage | Indoor |
| Inner Material | Plastic |
| Item Height | 1 inches |
| Item Weight | 5 Ounces |
| Manufacturer | Apera Instruments |
| Model | AI223 |
| Model Name | AI223 |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
| Outer Material | Plastic |
| Power Source | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Resolution | 0.1°C |
| Reusability | Reusable |
| Special Feature | Waterproof |
| Style Name | ±0.01 pH (3pt calibration) |
| UPC | 810214030478 |
| Unit Count | 1.0 Count |
| Upper Temperature Range | 60 Degrees Celsius |
| Warranty Description | Two-Year limited warranty for the instrument, Six-Month limited warranty for the electrode(s). |

## Product Details

- **Brand:** Apera Instruments
- **Special Feature:** Waterproof
- **Color:** Blue
- **Age Range (Description):** Adult
- **Included Components:** SX620 pH Pen Kit
- **Outer Material:** Plastic
- **Display Type:** Digital
- **Connectivity Technology:** Usb
- **Product Care Instructions:** Wipe Clean
- **Unit Count:** 1.0 Count

## Images

![SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC - Image 1](https://m.media-amazon.com/images/I/612gjwEI1YL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent instrument
*by C***C on January 17, 2019*

Easy to use, appears to be accurate and truly beats the cheap $10-30 meters that are unstable and can take minutes to indicate a fixed reading. This instrument gives a presumably accurate result almost immediately. Supplied calibrating solutions are sparse but can evidently be reused if the probe is carefully cleaned as directed. A single multi-function button that works well replaces the two or three often present on other models. Allegedly waterproof, and the probe is replaceable. Sealing probe cap holds supplied soaking solution to protect and prolong life of electrode. Extra batteries supplied are a plus. Good instructions and warranty. Factory calibrated and even has its own serial number. Not a professional device that can cost hundreds, but certainly worth its price.

### ⭐ Garbage, don't waste your money
*by V***E on January 6, 2024*

At first, I thought this was a good product. It seemed to calibrate easily. It worked for about 2 years and then it didn't . It acted like the batteries were dead, it would turn on and then turn itself off like the batteries were low. I took the batteries out and tested them and they were nearly perfect. I put them back in, same issue. I switched to new batteries same thing. Then it finally started turning on and the ph counter was swinging all around up and down like crazy before maxing out at 15. Turning it on and off many times it did more inconsistent crap. Then I thought it was working again so I tried to calibrate it with ph 4 solution. It registered it as 10 ph and calibrated to that. Tried the 7 ph solution it calibrated to 10 again. I contacted support and they told me I needed a new probe. I check the price on their website $48 plus shipping for a new probe $55 on Amazon. So a new meter is $69 and a replacement probe is $55? Get real and I don't even know if the probe is the problem. I started reading comments on the replacement probe and many were stating they had the same exact weird problem I had. They had bought the probe in hopes of fixing their meter only to find out that it was the electronics, not the probe. Then when they contact support they are told it is their fault, they must have gotten the meter wet. I'm now not sure how accurate this meter is because I have no way to test it anymore and it didn't occur to me in the past it could have been off. But looking back now it did seem to almost always give similar results when testing soil ph. I'll be going back to the cheapo Ph meters until I can get the money to buy a really nice one that is not made in China. I could have bought 7 cheap ph meters for the price of this junk. I thought I would try moving up to a better meter. I should have spent a little more at the time to get something of true quality. The cheap ones work as well as this one, but this had the fancy skinny probe to fit in test tubes so I could use smaller sample sizes. It just sucks this wasn't the quality product I was hoping for. Avoid this Junk meter. If replacing the probe worked I'd try it, but I don't want to spend $55 just to have to turn around and send it back. This thing is acting like it is an electrical issue, not a probe.

### ⭐⭐⭐⭐ Lab grade ph meter
*by E***Z on February 21, 2025*

The item arrived earlier than expected and comes well packed. I like that it is lab grade with a certificate of quality control and calibration date. The meter itself is very well made and doesn't feel cheap. It has a built in thermometer which is not necessary for my use but very convenient. the calibration and solutions were sealed tight and did not leak. The kit includes 2 extra batteries which is nice. The instructions for calibration are very clear & easy and takes about 2 mins to do. My only complaint is that the protective cap on the ph meter probe was not on tight and the soaking solution that is used for long term storage, leaked out and crystallized. The kit does come with a bottle of soaking solution so i just had to soak and clean the probe before calibration.

## Frequently Bought Together

- Apera Instruments SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration, ATC
- Apera Instruments AI1115 pH Calibration Buffer Solution Kit (7.00, 4.00, 10.01), 8 oz. for Each, NIST Traceable
- Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes

---

## 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.ec/products/70213043-sx620-ph-pen-tester-kit-with-0-01-ph-accuracy](https://www.desertcart.ec/products/70213043-sx620-ph-pen-tester-kit-with-0-01-ph-accuracy)

---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-09*