One Chem Concentrated Cassette Toilet Treatment - 1 Litre


3 in stock
New One-Chem™ is a concentrated formula. Just 20 ml of One-Chem is enough for a 10 litre capacity waste tank. Our 1 litre bottle of One-Chem is enough for 40 doses for a 10 litre waste tank and 8 litre flush tank, four times as much as some other leading brands.
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One-Chem™Cassette Toilet has a clever measuring device, which means no more wasteful overdosing.

Is concentrated, giving up to 40 doses!

New One-Chem™ is a concentrated formula. Just 20 ml of One-Chem is enough for a 10 litre capacity waste tank. Our 1 litre bottle of One-Chem is enough for 40 doses for a 10 litre waste tank and 8 litre flush tank, four times as much as some other leading brands.

*40 doses based on – 10 litre waste tank and 8 litre flush tank

Works for both flush and waste tanks

If you’ve ever wondered why you have to put different solutions in your flush and waste water tanks, you’re not alone. So did we! That’s why we came up with One-Chem™. New concentrated One-Chem has been developed specifically for camping, caravanning and cassette toilets. Our one-bottle formula means there’s no need to faff around with two separate bottles. Simply follow the instructions on the bottle, using the right amount of One-Chem for your toilet. No hassle, no fuss.  That’s all there is to it!

Is environmentally friendly, bio-degradable, pH neutral and formaldehyde free

Around the world the move to ban formaldehyde based toilet chemicals in favour of more environmentally friendly chemicals is gathering pace. Formaldehyde based chemicals are now banned in many campsites across the UK and Europe, but the problem for many chemical toilet owners is that the ‘green’ alternatives simply haven’t worked as well as their harmful competitors… until now.

New concentrated One-Chem™ is guaranteed to be completely formaldehyde  free and can be used at all formaldehyde free disposal points. It’s also  completely biodegradable and pH neutral. What’s more important is that  concentrated One-Chem REALLY WORKS! Our unique formula helps to quickly  break down solid waste, making the unpleasant job of servicing your  chemical toilet as pleasant as it can be!

Is safe, effective and smells great!

One-Chem™ has been designed to be completely safe and hassle free to use, and is even non-staining in case of spillages. Our concentrated One-Chem formula has a pleasant odour, which lasts and lasts, giving you a fresh smelling toilet day-after-day.

We've made One-Chem to be the safest, most effective product available, but you should always read the instructions on the label.
Code TOILET-000076
Weight 5kg
Type Cleaners
EAN 5060230111209
GTIN 5060230111209
Department Below Deck
Shop By Marine Toilets & Accessories


FREE DELIVERY: Orders over £100 qualify for free delivery ONLY if your delivery address is within Mainland UK and ONLY if it falls within zones A or B of the Postcode Zone Map diagram below.

Free delivery does NOT qualify for addresses that fall into zones C, D or E, or if the delivery address is to the Isle of Wight or Isles of Scilly.

All orders are processed, dispatched and delivered during the working day week (Monday to Friday). We do not process or dispatch parcels on Bank Holidays or over the weekend. All orders taken before 9am Mon-Fri will be processed and dispatched by 5pm the same day. Any orders placed after 9am Mon-Fri may be processed the following working day.

Bayside Marine can deliver to anywhere in the UK. We use the most reliable and cost-effective couriers to get your item to you as swiftly as possible.

Delivery Costs:

  • Royal Mail 1st Class (0-1.9kg). £3.95. All small, unrestricted items.
  • UK Mainland Courier: £8.99. All small items that cannot go via Royal Mail
  • UK Mainland Courier: £12.99. All larger items which are too big for the smaller courier option.
  • Isle of Wight / Isles of Scilly Courier: £16.99. All small items that cannot go via Royal Mail
  • Isle of Wight / Isles of Scilly Courier: £20.99. All larger items which are too big for the smaller courier option.
  • Scottish Highlands, Islands and Northern Ireland Courier: £29.99. All items that cannot go via Royal Mail

Very large or heavy orders that do not qualify for the free delivery offer may be subject to a delivery surcharge. If this is the case this will be added automatically during the checkout process

We dispatch our orders via two methods:

Method Delivery Est. Description
Royal Mail 1st Class 1-4 working days All standard orders are sent out Royal Mail 1st class unless they are a high-value or a Royal Mail prohibited item (paints, chemicals, solvents, glues etc). If the value of your order is over £30 then it will be sent out Recorded Delivery a signature may be required upon receipt.
DHL Courier 1 working day* For high value items, items that Royal Mail won't accept and for when express delivery has been selected during checkout. *Deliveries to Scotland, highlands, islands and Northern Ireland may take 1-3 days.

Important - Our delivery times quoted are for working days, and so do not include weekends or Bank Holidays. We post goods daily Monday to Friday and on the day that we mark your item as dispatched. If an item is ordered with DHL next day courier that is dispatched on Friday then it will not be delivered until Monday (or Tuesday if the Monday is a bank holiday). If an item is ordered Friday evening with express delivery selected then it will be dispatched the following working day in the new week.

If you reside in Scotland, Isles of Scilly or Wight, or Northern Ireland, any courier delivery prices will be increased if your delivery address falls under zones C, D or E. Please refer to the diagram below which shows which postcodes are affected by this:

Delivery can be to any address as long as the address at which your payment card is registered is also present on your order. Please make sure you keep the receipt enclosed with your goods.

After you have placed goods in your shopping basket, you have the option to input your postcode to get an estimate on any additional postage costs before proceeding to the checkout. You will always see this charge before submitting your order. The contents of your order and your delivery postcode area will determine which delivery services you will be offered. We do not deliver to Post Office (P.O.) boxes or shipping agent addresses. You will only pay one delivery charge per order.

Items sent by Royal Mail should be with you within 1-4 working days. We are unable to confirm any delivery time / date. For items sent by courier they will automatically email you when your parcel has been collected from us and should include a delivery estimate and tracking number. You will then be updated on the day your parcel is due to arrive with an estimated delivery time slot. This time slot is decided by the courier.

Whilst every reasonable effort shall be made to keep to any delivery date, time of delivery shall not be of the essence and Bayside Marine ltd shall not be liable for any losses, costs, damages or expenses incurred by the customer or any other person or company arising directly or indirectly out of any failure to meet any estimated delivery date. The risk in the goods shall pass from the company to the customer upon delivery of such goods to the customer.

Large orders, such as paint, may be dispatched in more than one box. All boxes will be numbered so that if any are missing on delivery it will be easy to spot and so can be reported to the delivery driver. If any parcels are missing from your order you must let us know within 3 working days so that it can be followed up by us.

Force Majeure
Bayside Marine ltd shall have no liability to you for any failure to deliver goods you have ordered or any delay in doing so or for any damage or defect to goods delivered that is caused by any event or circumstance beyond its reasonable control.

Cancellation of Orders
If an order is yet to be dispatched then you will be able to cancel your order prior to shipping with no cost penalty being incurred and full credit of your account if monies have already been taken. You can cancel an order by phoning us on 01803 856771 or emailing us at

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