ORP Meter, ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential, Aquariums, Swimming Pools, Water Treatment Systems, Aquaculture, Spa
Condition: New
Buy Now, Pay Later
As low as
$6
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 8 left in stock, order soon!
Arrives
Thursday, Apr 30
Recently Viewed
Color: ORP Redox Meter
Features
- User-Friendly Design: Large, clear display for easy reading, 1-point calibration with included screwdriver, and automatic temperature compensation (050C).
- Portable & Durable: Compact, includes a shockproof case. High Accuracy & Affordability.
- How to calibration: Clean the electrode and gently dry with paper towel. Dip the electrode into the distilled water for about 5 minutes. Turn on the unit by the ON/OFF switch, it is located on top of the unit.
- Wide Measurement Range: Accurately measures ORP (Oxidation-Reduction Potential) from -1999 to +1999 mV in 1 mV steps, suitable for testing drinking water, pools, aquariums, wastewater, and industrial applications.
- Experience the convenience of our mini-sized pH meter, carefully designed to fit in your pocket effortlessly. With its compact size, you can now take measurements anytime, anywhere. Whether you're at the pool, on a trip, at the beach, or camping, this portable pH meter is your reliable companion for accurate testing.
Product Dimensions: 6.1 x 1.22 x 0.62 inches
Item Weight: 4.6 ounces
Manufacturer: Gain Express Holdings Ltd
Item model number: ORP-228
Batteries: 4 LR44 batteries required.
Is Discontinued By Manufacturer: No
Date First Available: May 11, 2018
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Apr 30
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Color: ORP Redox Meter
ORP for good Hydrogen water bottle should be between -700 to -200, and this Meter helps me monitor that. Easy to use and simple. Be careful when opening the battery compartment, the wires are short but if you are careful no problem.
Reviewed in the United States on March 1, 2024 by R. Bruno
Color: ORP Redox Meter
This product works exactly as described. It works great for all my freshwater aquariums. An excellent product at a very good price. It arrived on time and in excellent condition.
Reviewed in the United States on January 13, 2024 by John A Manrow
Color: ORP Redox Meter
I liked the size of the tester. Not sure how accurate it is but it gives me a good idea of what the ORP IS.
Reviewed in the United States on February 19, 2022 by Mac
Color: ORP Redox Meter
I have used orp meter with several brands in the past. When i discovered a pen type orp was available. I had to get one and test it. My pool is 12,000 gallons and i just upgraded my plumbing to maximize flow rate of my ozone system. I was happy to get an accurate reading of 543 mv above the acceptable range. Thanks to this pen type No more guessing. I place the water sample in a glass and let the reading settle for a few minutes. The only drawback shipping is too slow. I wish the Manufacture speed up the shipping. Customers generally Don't mind paying a bit more for fast speed shipping included in the total cost. Orp levels (application) Aquaculture 150-250 Cooling towers 250-350 Swimming pool 400-475 Hot tub 450-600 Water disinfected 600
...
show more
Reviewed in the United States on May 26, 2019 by Michael D. Michael D.
Color: ORP Redox Meter
After soaking the probe in distilled water for 2 hours per the instructions and calibrating with their separately sold calibration solution (inital calibration was over 200mV off), reading was over 100mV different after rinsing, drying, and putting back into the calibration solution. Useless for hydroponics and you get what you pay for. Guess I'll just have to pony up and buy a name brand meter.
...
show more
Reviewed in the United States on October 27, 2023 by KillaZap
Color: ORP Redox Meter
Nice size but never worked correctly. Needs constant re calibration using a $12 extra solution. Now don’t trust the readings. Would not recommend due to hassle involved with use.
Reviewed in the United States on August 15, 2021 by Erhwa2
Color: ORP Meter + Calibration Powder
Works fine
Reviewed in the United States on June 11, 2023 by leshueone
Color: ORP Redox Meter
Works as advertised. Good price.
Reviewed in the United States on April 12, 2023 by Alexander H. Budny