Top 10 Best sodium thiosulfate in 2026

Last Updated - 6/11/2026

🏆Best Choice

MAV AquaDoc

AquaDoc Bromine & Chlorine Neutralizer for Pool & Hot Tub - 1lb - Sodium Thiosulfate Formula to Reduce Chlorine & Bromine Levels - Made in The USA

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Helps Reduce Chlorine & Bromine Levels - Assists in lowering elevated chlorine and bromine levels after shocking or over-chlorination. Our Chlorine Reducer for pools and spas supports balanced water conditions as part of your regular maintenance routine.
•Sodium Thiosulfate-Based Formula - Contains sodium thiosulfate, a widely used dechlorinator that helps reduce chlorine and bromine levels while supporting overall water balance. Suitable for ongoing hot tub and pool maintenance or for use after sanitizer levels rise.
•Easy to Use & Readily Dissolving - After testing the water, add the recommended dosage of our pool chlorine reducer and allow your filtration system to circulate. The formula is designed to dissolve evenly for smooth distribution.
•Compatible with Multiple Water Systems - Suitable for chlorine and bromine-treated pools and hot tubs, including inground, above-ground, and saltwater systems. Commonly used as a bromine neutralizer in regular spa and pool maintenance.
•Proudly Made in the USA - AquaDoc spa and pool chemicals are manufactured in the USA with a focus on quality and consistency. A dependable addition to your ongoing water care routine.

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$21.97

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ChemCenter

Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Packaging and Labeling May Vary Product has an indefintie shelf life

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$18.95

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BioGuard

BioGuard ChemOut, 2 lb, Neutralizes High Chlorine & Bromine Levels, Reduces Pool Downtime, Suitable for All Pool Types

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Eliminates excessive chlorine, bromine or hydrogen peroxide residual
•Dissolves instantly
•Reduces pool downtime

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$23.99

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In The Swim

In The Swim Chlorine Neutralizer for Swimming Pools - Quickly Reduces Chlorine Sanitizer Levels - 90% Sodium Thiosulfate - 2.25 Pounds

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Reduces Free Available Chlorine
•90% Granular Sodium Thiosulfate
•No premixing required
•Dosage: 5 ounces per 10,000 gallons of water to lower chlorine levels 5.5 ppm
•Proudly manufactured in the USA for over 40 years

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$21.49

$24.49

-12%

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Taylor

Taylor Technologies R-0007-C Thiosulfate No.7 N/10 2 OZ

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Get the Most out of Your Test Kit – Extend the life of your pool or spa test kit with this Thiosulfate N/10 2 ounce dropper refill. This is an easy-to-use test reagent for Total Alkalinity, a common water test parameter.
•Quick & Easy to Use – Simply collect your water sample using the comparator and add the appropriate testing reagents to determine the results. Product instructions are written in non-technical language with easy-to-understand pictograms.
•Pool & Spa Test Kits Built to Last – With testing kits built to last, you’ll find yourself needing to replace your Taylor reagents before the entire kit. Replacement reagents are available separately so you can easily replace your pool and spa testing chemicals every season.
•For Homeowners and Professionals – Taylor products are built to professional standards but with processes easy enough for any pool or spa owner to use. With unparalleled customer service and support, Taylor is the go-to for every distributor, retailer, commercial operation, and homeowner… wherever water is tested.
•Proudly Made in the USA – Since 1930, Taylor has been the leading developer of water testing products. All Taylor products are engineered and manufactured in the USA. You can trust that when you choose Taylor, you will receive the highest quality water testing equipment on the market.

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$7.99

$8.70

-8%

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Taylor

TAYLOR TECHNOLOGIES INC R-0007-A THIOSULFATE #7 N/10 3/4 OZ

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Get the Most out of Your Test Kit – Extend the life of your pool or spa test kit with this Thiosulfate N/10 0.75 ounce dropper refill. This is an easy-to-use test reagent for Total Alkalinity, a common water test parameter.
•Quick & Easy to Use – Simply collect your water sample using the comparator and add the appropriate testing reagents to determine the results. Product instructions are written in non-technical language with easy-to-understand pictograms.
•Pool & Spa Test Kits Built to Last – With testing kits built to last, you’ll find yourself needing to replace your Taylor reagents before the entire kit. Replacement reagents are available separately so you can easily replace your pool and spa testing chemicals every season.
•For Homeowners and Professionals – Taylor products are built to professional standards but with processes easy enough for any pool or spa owner to use. With unparalleled customer service and support, Taylor is the go-to for every distributor, retailer, commercial operation, and homeowner… wherever water is tested.
•Proudly Made in the USA – Since 1930, Taylor has been the leading developer of water testing products. All Taylor products are engineered and manufactured in the USA. You can trust that when you choose Taylor, you will receive the highest quality water testing equipment on the market.

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$6.50

$9.99

-35%

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PURE ORIGINAL INGREDIENTS

Pure Original Ingredients Sodium Tripolyphosphate (8 oz) Powerful Cleaning Agent, Water Softener, Laundry Additive

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Pure Original Ingredients Sodium Tripolyphosphate NSF/ANSI Standard 60 Certified
•Use as a water softener and cleaning agent
•Add to laundry detergent
•Always pure ingredients with no additives
•Packaged in Utah, USA

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$9.99

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ChemCenter

Sodium Thiosulfate, Ultra Pure, Ultra Fine Crystals, 500 Grams (1.1 lb.)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Finest Particle Size on the Market Highest Purity on the Market
•Product has an Indefinite Shelf Life

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$24.95

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Dawn Scientific Inc.

Sodium Thiosulfate Pentahydrate 8 LB Value Pack

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Chemical Application: Use as a reagent in analytical chemistry
•Water Treatment: Effective solution for treating aquarium and pond water to maintain proper water chemistry
•Detoxifying Properties: Acts as a reducing agent and antioxidant to neutralize free radicals
•Mineral Support: Helps support mineral intake and balance in aquatic environments
•Versatile Uses: Suitable for dissolving calcified vessels and treating sulfur-containing water sources

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$34.95

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Eisen-Golden Laboratories

Sodium Thiosulfate Pentahydrate [Na2S3O3.5H2O] 99% AR Grade Powder 4 Oz in a Bottle

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Weight: 4 Ounces (113 Grams)
•Purity: 99% Pure
•Grade: Reagent
•Texture: Fine Powder
•CAS Number: 10102-17-7

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$5.99

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