200 PPM vs 300 PPM HOCl: What Do BJJ Athletes Actually Need?

REST ROUND · September 9, 2026 · 5 min read

HOCl sprays are not all the same. The concentration of hypochlorous acid — measured in PPM — determines how effectively it kills the pathogens that end training camps. Here is what the science says and what BJJ athletes actually need.

What Is PPM and Why Does It Matter?

PPM stands for parts per million. It measures how much hypochlorous acid (HOCl) is dissolved in the solution. A 100 PPM spray contains 100 milligrams of HOCl per litre. A 300 PPM spray contains 300 milligrams — three times the active antimicrobial concentration.

PPM is the single most important number on an HOCl product label because it directly determines how quickly and completely the solution kills pathogens on contact. For low-risk surfaces — countertops, food prep areas — 50 to 100 PPM is sufficient. For high-risk environments like BJJ mats, contaminated training gear, and open skin abrasions from contact sport, you need significantly higher concentration.

What the Research Shows

Hypochlorous acid has been extensively studied as an antimicrobial agent. The key findings relevant to combat sports athletes:

Against Staphylococcus aureus (staph): HOCl at 200 PPM achieves a 99.9% kill rate on clean surfaces within 30 seconds. On contaminated surfaces — gear, skin with sweat, mat burns — the organic load reduces effectiveness. At 300 PPM, the kill rate is maintained even in the presence of organic contamination. For athletes with open abrasions from training, 300 PPM is the clinically appropriate concentration.

Against ringworm (tinea corporis): Fungal pathogens are generally more resistant than bacteria. Higher HOCl concentrations show meaningfully faster kill rates against the dermatophytes that cause ringworm. 300 PPM outperforms lower concentrations in both speed and completeness of kill.

Against MRSA: Methicillin-resistant Staphylococcus aureus — the antibiotic-resistant strain increasingly common in combat sports environments — requires higher HOCl concentrations for reliable elimination. 300 PPM is the threshold recommended for MRSA decontamination in clinical settings.

200 PPM vs 300 PPM — Head to Head

Why pH Matters as Much as PPM

Concentration without the right pH is a problem. HOCl exists in two forms depending on solution pH — hypochlorous acid (HOCl) and hypochlorite ion (OCl⁻). At lower pH (5.5 to 7), HOCl dominates and is 80 to 100 times more antimicrobially active than OCl⁻. At higher pH, the less effective hypochlorite ion dominates.

This is why pH 5.5–6 is the target range for combat sports HOCl sprays. It maximises the active HOCl form while simultaneously matching human skin's natural pH — making it safe for daily use on face, body, and open wounds. A 300 PPM product at pH 5.5–6 is categorically superior to a 300 PPM product at a higher pH.

REST ROUND Combat Skin Protect Spray is formulated at 300 PPM HOCl and pH 5.5–6 specifically for this reason.

Who Needs 300 PPM vs Who Can Use Less

Use 300 PPM if: You train BJJ, MMA, or Muay Thai more than 3 sessions per week. You train in Thailand or any high-volume international training environment. You have had staph or ringworm before. You train with cuts or mat burns. You share mats with high volumes of training partners.

Lower concentrations may be sufficient for: Light recreational training once or twice per week on well-maintained mats with a small consistent group. Surface cleaning of low-risk equipment between uses.

If you are serious about combat sports training — particularly in a Thailand camp, at a large gym, or at competition — 300 PPM is the only concentration worth using.

Frequently Asked Questions