Indigo® 0-400 ppm hydrogen peroxide test strips help greenhouse operators verify cleaning, sanitation, and low-level treatment solutions used in hydroponic reservoirs, equipment, and produce handling. Fully documented for quality, performance, and regulatory review.
Greenhouse hydroponic systems rely on clean nutrient-water reservoirs and sanitized equipment to prevent the spread of plant pathogens between crop cycles. Hydrogen peroxide solutions in the 100-150 ppm range are commonly used to suppress algae and microbial growth in reservoirs, helping maintain dissolved oxygen levels and support healthy root development.
For surface sanitation and pest-control applications, higher concentrations between 200-400 ppm may be applied to fruits, vegetables, and greenhouse equipment in accordance with organic certification and integrated pest management practices. Indigo® 0-400 ppm hydrogen peroxide test strips provide a fast, visual method to confirm these working solution ranges without meters, reagents, or calibration.
We've been selling hydrogen peroxide test strips since 2007. Buy fully documented Indigo® hydrogen peroxide test strips, 100 strips/pack, with a guaranteed 3 year shelf life (dated back from expiration date "yyyy.mm.dd"); see storage requirements in Specifications.
Baffled by mixed units such as mL per gallon? Our Dilution Calculator can help you work it out as long as you understand a few metric equivalents to American units such as 5mL is roughly a teaspoon & 4000mL is ~1 US gallon.
For example, if you pour 2.5ml (1/2 tsp) of 35% food grade into 1 gallon (4000ml) of water, the calculator should tell you that you now have a ~220ppm solution (close enough to the 200ppm on the color chart). If the test strip reads much lower than this, your peroxide might be old. Try adding a bit more of the concentrate & retest. A 10mL graduated cyclinder could be handy for working in mL.
Got clogged sprayer nozzles? They may just need to be reamed out. We have a special collection of 10 different sizes of stainless steel insect pins that can help you unclog just about any orifice, small or large.
Related information or images
Peroxide Test Strips, 0-400ppm H2O2
Beverage Bottling/Filling
Cosmetics/Personal Care
Food Processing Equipment
Laboratory & Research
HVAC-Cooling Water
Water Treatment
Dairy
Hot Tubs
Pools
Specifications
Dip strip for 1 second & compare to color chart calibrated at at 0, 100, 200, and 400 ppm after 60 seconds. The detection limit is 50 ppm with an accuracy: +/- ½ color chart unit
A Certificate of Conformance is available on request after shipment.
Indigo® Quat (QAC) test strips are made in USA & calibrated with NIST standards.
Test Strip Documentation
Stability Statement
Certificate of Analysis
SDS
Calibration Fluid CoA
Reviews (12)
2024-10-07
Product is great, have ordered for a few years now BUT your shipping cost is ridiculous! We ordered peroxide test strips and the cost of shipping was close to $20.
— Cheryl
— Indigo:
Unfortunately all common delivery companies have had large cost increases and we are all at their mercy for shipping costs.
2021-05-27
SERVICE IS GOOD.. While I understand availability can be tricky, resulting in a price increase, you've never been out of stock , and the price has increased. this wouldn;t bother me otherwise but.. you're the only company that sells the higher range strips. i have spent hours looking online looking for another supplier. i feel your pricing reflects the monopoly you seem to hold. i'd like to get better pricing as a we purchase them for resale. i've also ordered from you guys for 7-8 years.. i know our volume is minimal, but that's mainly because we don;t have a pile of peroxide clients. thanks
— tom
— Indigo:
Not sure who you are comparing us to but the only "monopoly" we have is on the best prices for 5 or more & a 3 year guaranteed shelf life. Actually, we've held prices from Jan. 2019 till end of 2021 and, as you noted, we are never out of stock!
2021-01-23
Product arrived in a timely fashion and was just what I expected, at a great price.
— Warren
2020-09-17
Great product! Customer service was wonderful helping me figure out which test kit I needed. Thanks!
— Kate
— Indigo: Glad we could help.
2020-07-16
Super useful for Hot Tub.
Price is good and service is awesome.
— Jonathan
2019-11-19
Great for hydrogen peroxide pools... easy, cheap and great service.
Rich
— rich
2019-05-23
Great product, awesome service, H2O2 is so much better than Chlorine, and these strips are the perfect tool for keeping us in clean hot water...
— Jon
2019-05-01
Super Product! We order for some of our hot tub customers who use peroxide in their tubs. No complaints.
Easy ordering and fast, reliable service!
— Wheatland Machine
2019-04-22
Ordered the test strips and they arrived promptly just a few days later. Great company to order from. Test strips are an easy way to maintain the correct balance of peroxide in our hot tub.
— Cheryl
2018-09-12
Quick results and so easy to use and read.
— 400ppm Peroxide Strips
2017-11-06
Test strips work great, fast and easy
— Les
2017-05-07
Love these strips! Quick , Easy and Accurate way to maintain the peroxide level in our hotub! We always re-order on the last container so we are never without them!! AnnB
— 400ppm Peroxide Strips, 50/Pk
— Indigo:
If you are using 1 strip per week, you can actually save a little bit buying 2 at a time.
Our discounts start at just 2! And it costs the same to ship 2 as 1.
Unfortunately all common delivery companies have had large cost increases and we are all at their mercy for shipping costs.