We ship worldwide using Royal Mail, UPS & DPD. Please use the tables below as a guide for working out the shipping prices to your address. Please be aware that the product weights stated in the listings are for the products themselves, not the final weight when packaging is included. Our system will automatically calculate this and provide a total order weight during checkout.
Please be aware that certain products, such as liquids and certain insect repellents, cannot be posted outside of the UK due to carrier restrictions. Our system will not enable you to checkout if these items are going to a non-UK address.
If you are unable to complete the checkout process when coming to choose a shipping option, then your order may be over the shipping weight limit for your address. Please call us on +44 (0)116 2402634 or email us at sales@subzero.co.uk and we can give you a custom shipping quote.
For more detailed information regarding our shipping process please visit our comprehensive Shipping Page and our Christmas 2025 last posting date page.
UNITED KINGDOM
*All UK orders over £50 are shipped free of charge
* Royal Mail guaranteed service and DPD next day service is not available for Jersey, Guernsey, Isle of Man and Northern Ireland.
USA & CANADA
EUROPE
REST OF WORLD
If you are unhappy with your purchase, please return it to us within 180 days of receipt. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.
For more information regarding our returns policy please visit our Returns Page
If you would like to return your order, then you have 180 days from its receipt to do so.
A full refund or exchange is available, provided the items are in their original condition, unworn/unused, and with all tags attached.
Faulty items can be returned free of charge for a refund, repair, or replacement.
To initiate a return, customers should first contact Sub Zero's customer service team on sales@subzero.co.uk with the return details.
The return shipping costs are the customer's responsibility unless the item is faulty or an error has been made with the order
For more detailed information, please refer to Sub Zero's official refund policy.
We ship worldwide using Royal Mail, UPS & DPD. Please use the tables below as a guide for working out the shipping prices to your address. Please be aware that the product weights stated in the listings are for the products themselves, not the final weight when packaging is included. Our system will automatically calculate this and provide a total order weight during checkout.
Please be aware that certain products, such as liquids and certain insect repellents, cannot be posted outside of the UK due to carrier restrictions. Our system will not enable you to checkout if these items are going to a non-UK address.
If you are unable to complete the checkout process when coming to choose a shipping option, then your order may be over the shipping weight limit for your address. Please call us on +44 (0)116 2402634 or email us at sales@subzero.co.uk and we can give you a custom shipping quote.
For more detailed information regarding our shipping process please visit our comprehensive Shipping Page and our Christmas 2025 last posting date page.
UNITED KINGDOM
*All UK orders over £50 are shipped free of charge
* Royal Mail guaranteed service and DPD next day service is not available for Jersey, Guernsey, Isle of Man and Northern Ireland.
USA & CANADA
EUROPE
REST OF WORLD
If you are unhappy with your purchase, please return it to us within 180 days of receipt. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.
For more information regarding our returns policy please visit our Returns Page
If you would like to return your order, then you have 180 days from its receipt to do so.
A full refund or exchange is available, provided the items are in their original condition, unworn/unused, and with all tags attached.
Faulty items can be returned free of charge for a refund, repair, or replacement.
To initiate a return, customers should first contact Sub Zero's customer service team on sales@subzero.co.uk with the return details.
The return shipping costs are the customer's responsibility unless the item is faulty or an error has been made with the order
For more detailed information, please refer to Sub Zero's official refund policy.
Pyramid Biox Aqua Chlorine Dioxide Water Purification Tablets offer the safest and most effective form of chemical water disinfection, with virtually no after taste nor any harmful by-products. It will kill bacteria, viruses and cysts in water including Giardia and Cryptosporidium.
Each tablet is Individually vacuum foil packed for longevity, with an unopened tablet lasting up to 2 years from the date of manufacture.
Instructions for use: Add 1 tablet to every 1 litre of relatively clear water requiring treatment. Swirl gently and wait for at least 10 minutes before using the water. If the water is very cold or heavy microbial contamination is expected, use two tablets per litre and leave for 30 minutes.
Please Note: When using any water treatment product, the water should be relatively clear. If there is debris or any particulate matter in the water, this will reduce the effectiveness of the active ingredient. Particles should be removed by straining the water through a piece of cotton or similar fine weave material.
Scroll down the page for further product details, technical information and shipping.
