---
product_id: 43297725
title: "Portable Oxygen Concentration Content Tester"
brand: "gerneric"
price: "€ 159.09"
currency: EUR
in_stock: true
reviews_count: 8
category: "Gerneric"
url: https://www.desertcart.hr/products/43297725-portable-oxygen-concentration-content-tester
store_origin: HR
region: Croatia
---

# 0.01% precision resolution 200h continuous battery life 5s fast response time Portable Oxygen Concentration Content Tester

**Brand:** gerneric
**Price:** € 159.09
**Availability:** ✅ In Stock

## Summary

> 🌬️ Breathe Easy, Measure Smarter — Oxygen Insight in Your Hands

## Quick Answers

- **What is this?** Portable Oxygen Concentration Content Tester by gerneric
- **How much does it cost?** € 159.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/43297725-portable-oxygen-concentration-content-tester)

## Best For

- gerneric enthusiasts

## Why This Product

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

## Key Features

- • **Long-Lasting & User-Friendly:** Powered by a 9V lithium battery delivering 200 hours of continuous use with intuitive digital display and easy calibration.
- • **Precision that Powers Safety:** Electrochemical sensor with patented oxygen electrode ensures ultra-accurate oxygen readings from 0.00% to 100%, minimizing industrial risks.
- • **Portable & Lightweight Design:** Compact 200g device fits in your toolkit for on-the-go monitoring across industries—from mining tunnels to medical chambers.
- • **Rapid Response, Real-Time Control:** Get reliable oxygen content data within 5 seconds to optimize combustion, prevent hypoxia, and maintain safe environments instantly.
- • **Versatile Industrial & Medical Use:** Trusted for oxygen analysis in chemical plants, grain storage, anesthesia machines, and aerospace operations—your all-in-one oxygen guardian.

## Overview

The Portable Oxygen Concentration Content Tester is a cutting-edge electrochemical device designed for precise oxygen measurement across diverse environments. Featuring a patented platinum-silver electrode sensor, it delivers fast 5-second readings with up to 0.01% resolution. Lightweight and battery-powered for 200 hours, it’s ideal for industrial safety, medical monitoring, and scientific research, helping professionals prevent hazards and optimize processes with confidence.

## Description

The instrument's sensor adopts advanced oxygen electrode manufacturing process technology, which achieves long life, high stability, high precision, fast response time, and can resist the interference of various harmful gases (especially the interference of hydrogen). The oxygen electrode produced by our factory has also obtained Chinese patents. The instrument host is assembled by an imported A/D conversion circuit and digital display, which has the characteristics of easy operation and wide range of 0.00%-100%, particularly suitable for the following occasions. The sensor of the instrument is an electrochemical polarographic diaphragm oxygen electrode. It uses a platinum cathode and a silver-silver chloride anode. Potassium chloride is used as an electrolyte, and the diaphragm material is a polyperfluoroethylene propylene film selected to transmit oxygen. The electrode reaction is as follows Cathode: O ₂ + 2H ₂ O + 4e → 4OHˉ Ag + Clˉ → AgCl The electrode current is proportional to the oxygen content in the gas, driven by analog conversion and decoding, and displays the percentage of oxygen through a digital screen. Technical performance 1. Range Accuracy 0-100% Minimum resolution is 1% ±3%. 0-50.0% The minimum resolution is 0.1% ±1%. 0-5.00% Minimum resolution is 0.01% ±0.5%. 2. Ambient temperature: 0-40°C, humidity <90% 3. Response time: 5 seconds to indicate 90% of the oxygen concentration (20°C) 4. Sampling method: hand pinch suction type 5. Power supply: 9V lithium battery, can work continuously for 200 hours 6. Dimensions: 125×70×25 mm 7. Weight: 200g 8. Stability: 8 hours ±1%.How to use Rotate the switch to 50 gear and stabilize for about 3 minutes (the number of just started up drops from large to small, and the descent is the balancing process of the electrode, which is a normal phenomenon). Pinch the suction balloon 2-3 times, inhale the fresh air, and adjust the 21% twist so that the LCD screen displays 21.0 After the above work is completed, the instrument can be on-site detection, the sampling device is connected to the gas outlet to be measured, the other end is connected to the suction balloon, and the suction balloon is pinched 3-4 times. The oxygen content in the measured gas can be obtained after the reading is stable. If the measured value is higher than 50%, the switch is rotated to 100%, and when it is lower than 5%, the button is turned to 5% to improve data accuracy. After the inspection is complete, rotate the switch to the OFF position. The maintenance of the instrument This instrument uses a diaphragm oxygen electrode in a clean gas and relative humidity of about 85 environments, generally can be used for two years left and right, such as electrode aging can not be used, immediately send the instrument back to the factory for repair, maintenance costs are calculated separately. During use, the instrument's sensitivity decreases significantly as the use time is extended, caused by organic matter and dust contamination in the gas to be measured. This can be solved by treating the gas cleanly during sampling, which is the key to extending the life of the electrode. Fault: ① If the instrument's response is slow during the test and there is a significant drift after calibration, the principle is that there is water vapor or water vapor on the electrode head. Dust, please gently dab the water ball and dust with cotton wool to remove. ② If the calibration cannot be performed: 1. The air permeability is decreased due to the contamination of the diaphragm. 2. There are sharp objects to scratch the diaphragm, and the electrodes are aging. ③ If the LOBAT indicator in the upper right corner is on, the battery voltage is insufficient, and the back cover should be opened to replace the new battery. Note: If the instrument is not used for a long time, please remove the battery.

Review: No English instructions only Chinese - Great product once you figur out how to use it by experimenting! All instructions in Chinese except one table that’s 80% Chinese and makes no sense!
Review: Good value Oxygen Analyzer for general purpose use. - This Oxygen Analyzer is a good value, and it does work as described even without the English instructions. Initially go to the 0-50% range, attach the rubber bulb and filter tubes as shown in the picture, and slowly compress and relax the rubber bulb pulling air (a vacuum) thru the sensor from the filter tube. Be patient, while adjusting the calibration knob, allow the reading to settle for a few minutes at 21.0% (Nominal Oxygen content of about 25 deg. Celsius air and 50% relative humidity). Then you can hook up your Oxygen Concentrator to verify that it is working properly with a proper Oxygen percentage. I personally would not force air through the sensor module to anything over 5 liters per minute. (Nominal high setting on most Oxygen Concentrators for home use) Also, I would not get any water or high moisture content air in the sensor. Only normal room temperature air at normal humidity levels. Keep in mind that the sensor has a finite useful life, possibly 2 years, maybe more. Anyone that can elaborate on usage and care of the sensor, please enlighten the rest of us. So far the meter and sensor is a good product at a reasonable price for personal home or hobby use.

## Features

- 1. Determining oxygen content in the environment of industrial and mining enterprises, cabins, tunnels, variable pressure suction nitrogen machines, oxygen generators, chemical, and fertilizer industrial gases is amazingly effective in avoiding system explosions due to oxygen in the production process and preventing room interest accidents in hypoxic environments.
- 2. The oxygen content in the exhaust gas of the internal combustion engine and the oxygen content in the flue gas is detected to achieve reasonable combustion control and save fuel.
- 3.Oxygen content determination is carried out in the atmosphere storage of grains, fruits, vegetables, tobacco, Chinese herbal medicines, tea leaves, dried fruits, etc.
- 4. Analysis of oxygen content in ventilators, anesthesia machines, hyperbaric oxygen chambers, infant incubators, and aerospace and diving operations in the medical business.
- 5. It is essential experimental equipment for physical chemistry, biology, and other experiments in secondary schools, colleges and universities, and medical schools. 6. It is suitable for determining oxygen content in the meteorological department electrolysis hydrogen production, air separation oxygen production, nitrogen production, and pharmaceutical factory injection quality inspection.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01A6JYD0M |
| Alarm | Audible |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #601,848 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,055 in Multi Testers |
| Brand | Gerneric |
| Customer Reviews | 3.8 3.8 out of 5 stars (22) |
| Date First Available | January 5, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.01 ounces |
| Item model number | CY-12C |
| Manufacturer | Gerneric |
| Material | Plastic |
| Operating Humidity | 90 percent |
| Part Number | CY-12C |
| Power Source | Battery Powered |
| Product Dimensions | 0.98"D x 2.76"W x 4.92"H |
| Sensor Type | Electrochemical |
| Style | Portable |
| UPC | 712994962201 732130965743 |
| Upper Temperature Rating | 40 Degrees Celsius |

## Product Details

- **Alarm:** Audible
- **Brand:** Gerneric
- **Item Weight:** 0.01 Ounces
- **Material:** Plastic
- **Operating Humidity:** 90 percent
- **Power Source:** Battery Powered
- **Product Dimensions:** 0.98"D x 2.76"W x 4.92"H
- **Sensor Type:** Electrochemical
- **Style:** Portable
- **Upper Temperature Rating:** 40 Degrees Celsius

## Images

![Portable Oxygen Concentration Content Tester - Image 1](https://m.media-amazon.com/images/I/21FUqQxmY+S.jpg)
![Portable Oxygen Concentration Content Tester - Image 2](https://m.media-amazon.com/images/I/31lDCLcduGS.jpg)
![Portable Oxygen Concentration Content Tester - Image 3](https://m.media-amazon.com/images/I/31qetbQntIL.jpg)
![Portable Oxygen Concentration Content Tester - Image 4](https://m.media-amazon.com/images/I/31ytUURaQXL.jpg)
![Portable Oxygen Concentration Content Tester - Image 5](https://m.media-amazon.com/images/I/41M0tBXH0ZL.jpg)

## Questions & Answers

**Q: buenas tardes, funciona para medir la concentradion de oxigeno en un equipo de concentracion de Oxigeno?**
A: Si funciona para medir la pureza del oxígeno entregado por un concentrador de oxígeno

**Q: It came with instructions in Japanese! I cannot use it. Please help.**
A: we will sent the instructions in English by email.

**Q: I am looking to buy a tester, that will tell me what percentage of the air that comes out of the oxygen concentrator at each level #1-#2-3-4-5 will th**
A: I used this tester and it worked well for me. The price was very good compared to other equipment.

**Q: Will this work with a portable concentrator the a pulse flow?**
A: I don't know. The meter was a complete dud and failed to work right from the start.  It was a complete waste of money and I would not recommend purchasing it. They say the instructions are in English, but whar they don't tell you is that the instructions are still gibberish

## Customer Reviews

### ⭐⭐⭐⭐ No English instructions only Chinese
*by G***Y on February 2, 2026*

Great product once you figur out how to use it by experimenting! All instructions in Chinese except one table that’s 80% Chinese and makes no sense!

### ⭐⭐⭐⭐⭐ Good value Oxygen Analyzer for general purpose use.
*by K***T on November 1, 2016*

This Oxygen Analyzer is a good value, and it does work as described even without the English instructions. Initially go to the 0-50% range, attach the rubber bulb and filter tubes as shown in the picture, and slowly compress and relax the rubber bulb pulling air (a vacuum) thru the sensor from the filter tube. Be patient, while adjusting the calibration knob, allow the reading to settle for a few minutes at 21.0% (Nominal Oxygen content of about 25 deg. Celsius air and 50% relative humidity). Then you can hook up your Oxygen Concentrator to verify that it is working properly with a proper Oxygen percentage. I personally would not force air through the sensor module to anything over 5 liters per minute. (Nominal high setting on most Oxygen Concentrators for home use) Also, I would not get any water or high moisture content air in the sensor. Only normal room temperature air at normal humidity levels. Keep in mind that the sensor has a finite useful life, possibly 2 years, maybe more. Anyone that can elaborate on usage and care of the sensor, please enlighten the rest of us. So far the meter and sensor is a good product at a reasonable price for personal home or hobby use.

### ⭐⭐⭐⭐ It works.
*by S***R on January 23, 2022*

double check oxygen concentration produced by an O2 concentrator for an individual with a medical condition requiring supplemtal O2. Gives what seems to be an accurate reading, as checked against evaporated LOX. Bad - unit was was set to 50% when it arrived. Battery was dead. tricky to get dead battery out of compartment. no rubber plus present as described in interactions. made a loop out of old O2 hose, which we have a lot of, plug both nips on O2 sensor..

## Frequently Bought Together

- Gerneric Portable Oxygen Concentration Content Tester
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-22*