How to you use this solution. I didn't get any instructions and now sure how to use and how much?

Hi, mix 50ml with 1l water, heat until fizzing, leave for several minutes, rinse twice before using. That's for kettles. Instructions are hidden inside the sticker at the back, try peeling it off from bottom right corner. Best wishes, Ola

I have a discount code that came with the kettle i purchased. how do i claim this as there is nothing relevant on the russell hobbs website.

Had the same problem, so contacted Russel Hobb’s Customer Service. They replied that web site was undergoing reconstruction and to call 0345 658 9700 to order. The price for the discounted descaler is £0.88 and postage would be £2.30, this brings the total price to £3.18. as of November 2019

I have managed to screw off red lid, and open bottle, but it leaves a plastic lid underneath, and I cannot get it to shut again now.

the white plastic should be in side the red top .hope this helps ..

Can I use this on my plastic kettle model no. 21401

The description says it's designed for use in kettles, coffee machines and steam irons, so i would say yes. My coffee machine is mostly plastic and this hasn't caused me any issues. It's good stuff.

Brand	Russell Hobbs
Model Number	21220
Colour	Black
Product Dimensions	3.99 x 7.49 x 17.81 cm; 371.95 g
Capacity	250 Millilitres
Volume Capacity	0.25 litres
Material	Plastic
Compatible Models	Kettle
Special Features	Descaler
Item Weight	372 g

Descaler

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