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TelChem Hydrochloric Acid 20L


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  • Reduces the pH in pool water, improves clarity and improves the effectiveness of chlorine
  • Cleans and etches bricks and concrete
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Available nationally however we do exclude some remote and regional areas, for these areas contact your local store for delivery options. Standard delivery terms apply, calculated at checkout.

ACT, NSW & VIC: Free deliveries for online orders over $100 and under 40kg. Limited time only.

Local deliveries, DIY only, excludes trade sales. Find out more about our Delivery policy.

Collect from one of over 400 Mitre 10 or True Value Hardware stores across Australia. Check stock availability online. The store will contact you when the order is ready.

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With many applications, including pH adjustment, pool maintenance, brick cleaning, metal preparation and all manner of industrial processes, TelChem Hydrochloric Acid is an effective, responsible agent for the rapid treatment of many materials and applications. As most uses require the acid to be diluted into water, a 20L container is long-lasting. Cleaning pools, for example, calls for 100ml of TelChem Hydrochloric Acid with 40,000L of water to lower pH by 0.1. For applications on brickwork, 1 part acid combines with 10 parts water to be directly brushed onto the material. The corrosive power of hydrochloric acid, over soap and water, is vastly superior for industrial applications, such as mineral processing or concrete etching, thus also much faster. Due to the corrosive properties, extreme user care must be taken. Always wear the appropriate safety equipment, including respiratory. Avoid direct contact. In the event of an accident, immediately seek medical advice.

  • Chemical agent necessary for industrial needs, pH adjustment in pools, mineral processing, metal preparation and brick cleaning/etching
  • Reduces the pH in pool water, improves clarity and improves the effectiveness of chlorine: 100ml mixes with 40,000L of water to reduce pH by 0.1
  • Large 20L container is extremely long-lasting when diluted
  • Always refer to safety data sheet before use
  • Use outdoors in well-ventilated areas
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Local Deliveries

Many Mitre 10 stores offer a local delivery service. Contact your local store about what options you have for local delivery.


This Policy is provided by the Mitre 10 store participating in this website that has been selected by the customer to buy the particular product/s that are subject to this Policy (Store). The Store is not required to provide a refund or replacement if the customer changes their mind. But the customer can choose a refund or exchange if a product has a major problem. View the Full Return Policy.

What you need to know before purchasing

  • Not all stores carry stock of this product, but will order it in for you. 
  • Please allow up to 14 days for stock to arrive at your selected store.
  • Products are available while stocks last.
  • Contact your local store to check stock availability.
  • Images are for illustration purposes only.
  • Price is available to online purchases only.
  • Price when purchasing in-store may vary.

Many of our products come with a guarantee or warranty from the manufacturer. In addition, they come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any further reasonably foreseeable loss or damage. You are entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. Full details of your consumer rights may be found at