What are The Most Efficient Bleach Tablets?

Bleach Tablets: What They Are, How They Work and How to Choose

Bleach tablets are compressed tablets of sodium dichloroisocyanurate (NaDCC). Dropped into water, they release the same active chlorine that makes liquid bleach work. They are used in hospitals, schools and food service because they give exact, repeatable dilutions and store as a stable dry solid, without the weight or shelf-life problems of liquid bleach.

If you landed here because your usual tablets are disappearing, you are not alone. Brulin has discontinued BRUTABS and Berkshire is discontinuing EZ Bleach tablets. This guide covers how bleach tablets work, how to compare them, and what to switch to.

 

How do bleach tablets work?

NaDCC is a chlorine donor. When a tablet dissolves, it forms hypochlorous acid (HOCl), the fast-acting form of chlorine that destroys bacteria, viruses, fungi and spores. Each tablet holds a fixed amount of available chlorine, so one tablet in a set volume of water gives the same strength every time.

Unlike liquid bleach, which is highly alkaline, NaDCC produces a near-neutral solution that favors the formation of hypochlorous acid, an effective antimicrobial agent. NaDCC also maintains a reserve of available chlorine that is released as free chlorine is consumed. This can help sustain disinfecting activity in the presence of organic matter, which can rapidly reduce the effectiveness of liquid or ready-to-use bleach solutions.

 

Bleach tablets vs. liquid bleach vs. quat sanitizer tablets

 

	Bleach tablets (NaDCC)	Liquid bleach	Quat sanitizer tablets (e.g. Steramine)
Active ingredient	Sodium dichloroisocyanurate	Sodium hypochlorite	Quaternary ammonium
Main use	Disinfecting hard surfaces, including high-risk areas	Disinfecting hard surfaces	Sanitizing food-contact surfaces
Sporicidal (C. diff)?	Yes, when the label claims it	Yes, at label concentration	No
Dilution accuracy	Exact: one tablet per set volume	Varies with measuring and bottle age	Exact
Shelf life	Long, stored dry	Loses strength over months	Long, stored dry
Shipping and storage	Light, compact	Heavy, bulky, spill risk	Light, compact

Steramine-style quat tablets are a good tool for sanitizing food-prep surfaces. They are not built to disinfect patient rooms or kill C. diff spores, so the two products are not interchangeable. EarthSafe offers 334mg sanitizing tablets for food-contact surfaces for that job. PurTabs 334 mg tablets can also be used in greater quantities to achieve higher concentrations for additional applications, including C. diff spore disinfection, when prepared according to label directions.

 

How to use bleach tablets safely

1. Put on the PPE the label requires, usually gloves and eye protection.
2. Fill a clean container with the volume of room-temperature water stated on the label.
3. Add the number of tablets the label lists for your target pathogen. Do not crush them.
4. Let them dissolve fully, then label the container with the date and time mixed.
5. Pre-clean heavily soiled surfaces, then apply the solution, ensuring the surface remains wet for the full contact time specified on the product label for the target pathogen.
6. Discard any unused solution 24 hours after preparation.

IMPORTANT: NEVER MIX CHEMICALS. Never mix bleach tablets or their prepared solutions with ammonia, acids, or other cleaning products, as dangerous gases may be released.

 

What should EZ Bleach and BRUTABS users switch to?

Look for a replacement that matches or beats three things: the EPA kill claims you rely on, the tablet sizes your dilution protocols use, and the contact times your team can meet.

EarthSafe PurTabs and PurOne are NaDCC tablets registered with the EPA. PurTabs carries a broader EPA registration than either discontinued product. PurOne adds claims for biofilm and black mold, plus single-step cleaning and disinfection. Both lines come in multiple tablet sizes, from 3.3g tablets in 200-count tubs to 13.1g loose packs.

Shop PurTabs · Shop PurOne · See every kill claim

 

Frequently asked questions

Are bleach tablets the same as bleach? No. Both deliver chlorine-based disinfection, but they differ in formulation and chemistry. NaDCC tablets dissolve to produce a near-neutral solution that favors hypochlorous acid, while traditional liquid bleach is an alkaline sodium hypochlorite solution.

Are chlorine tablets for pools safe to use on surfaces? No. Pool tablets are not registered for surface disinfection and often contain other chemicals. Use only tablets with an EPA registration for hard-surface disinfection.

How long does a bleach tablet solution last once mixed? It depends on the product. Follow the solution-life instruction on the label, and mix fresh when it expires.

Do bleach tablets kill C. diff? Some do. Check that the label lists Clostridioides difficile spores, and use the dilution and contact time stated for it.

What is the difference between NaDCC and Steramine tablets? NaDCC tablets are chlorine-based disinfectants that can carry sporicidal claims. Steramine tablets are quat-based sanitizers for food-contact surfaces.

Steramine, EZ Bleach and BRUTABS are trademarks of their respective owners.