Download a free pH− Sodium Hydrogensulphate COSHH assessment for documenting the safe use, handling, storage and dosing of pH reducer powder in the workplace. This editable COSHH assessment template is designed for swimming pool operators, hot tub maintenance teams, spa facilities, leisure centres, holiday parks, gyms, landlords, facilities managers, cleaning teams, contractors and commercial premises where pH−, pH Minus or sodium hydrogensulphate is used to lower and control pool, spa or hot tub water pH.
pH− Sodium Hydrogensulphate, also known as sodium bisulphate or dry acid, is commonly used as a pH decreaser for swimming pools, spas and hot tubs where the water pH is too high. It is normally supplied as a granular or powdered chemical that is measured and added to water as part of routine water balance control. Because it is an acidic water treatment chemical, it should be assessed carefully under COSHH so that dosing, storage, dust control, skin and eye protection, segregation from incompatible chemicals and emergency arrangements are properly recorded.
This pH− Sodium Hydrogensulphate COSHH assessment template helps employers and responsible persons record key product details, intended use, dosing method, water system being treated, storage arrangements, exposure controls, dust precautions, first aid information, accidental release response, environmental precautions, waste disposal, PPE requirements, user instructions and review dates. It provides a practical starting point for workplaces needing a pH Minus COSHH assessment, sodium hydrogensulphate COSHH template, dry acid pool chemical safety document, hot tub pH reducer COSHH assessment or free health and safety document template for pool and spa maintenance chemicals.
Employers and duty holders have a legal responsibility to assess substances used during work activities and make sure employees, pool operators, cleaners, maintenance staff, contractors, visitors and others are not exposed to unnecessary health or environmental risks. Under the Control of Substances Hazardous to Health Regulations 2002, hazardous substances must be identified, assessed and controlled where required. These duties sit alongside the wider requirements of the Health and Safety at Work etc. Act 1974 and the Management of Health and Safety at Work Regulations 1999, which require employers to manage workplace risks and provide suitable information, instruction and training.
For products such as pH− Sodium Hydrogensulphate, the COSHH assessment should reflect the actual water treatment task being carried out, including opening containers, measuring the correct dose, adding the product to pool or spa water, avoiding dust inhalation, preventing skin and eye contact, storing the product in a cool dry area and keeping chemicals away from children and unauthorised users. The assessment should also consider safe segregation from incompatible pool chemicals, especially chlorine products, hypochlorites, oxidisers and alkalis, as accidental mixing of acidic products with chlorine-based chemicals can release harmful gases.
A clear pH− Sodium Hydrogensulphate COSHH assessment helps demonstrate that pool water balance chemicals, pH reducers, acidic powders, dosing procedures, chemical storage and spill response arrangements have been properly considered as part of workplace health and safety management. This is particularly useful for pool plant operators, spa operators, hot tub maintenance staff, leisure centre teams, holiday park staff, cleaning supervisors, facilities teams and duty holders responsible for water hygiene, chemical control and contractor safety documentation.
The document can be customised with your company details, site location, product brand, water system type, dosing method, quantity stored, authorised users, responsible person, storage controls, segregation arrangements, PPE requirements and review date. Once completed, the assessment can be downloaded as a PDF, stored in your compliance records or shared with pool operators, spa staff, cleaners, maintenance teams, contractors, supervisors and health and safety representatives.
Relevant compliance includes the Control of Substances Hazardous to Health Regulations 2002, Health and Safety at Work etc. Act 1974, Management of Health and Safety at Work Regulations 1999, Workplace (Health, Safety and Welfare) Regulations 1992, Environmental Protection Act 1990, UK CLP requirements, UK REACH duties where applicable, HSE COSHH guidance, HSE swimming pool guidance and the requirement to use the product label and manufacturer’s safety data sheet when completing a suitable and sufficient assessment.