CTX Salt Expert 25 g/h salt chlorinator cell, Certikin Ref. 21906C (with housing)
CTX Salt Expert 25 g/h salt chlorinator cell, Certikin Ref. 21906C (with housing) subject to supplier availability.
Estimated delivery time: 3 to 7 business days
Description
Description
The complete CTX Salt Expert 25 g/h Certikin cell (Ref. 21906C) is an original replacement part designed to restore chlorine production in salt chlorinators when the cell has reached the end of its service life or when the vessel also needs to be replaced.
This version corresponds to the with vessel model, so it includes the complete assembly. It is the right option when the current vessel is damaged, shows signs of wear, or you prefer to replace the entire assembly at once.
Includes the cell and complete vessel.

Quick overview
Compatibility
- Salt chlorinator CTX Salt Expert 25 g/h Certikin
- Version shown: with vessel
- Do not buy this replacement based on appearance alone; always verify the exact reference before ordering
Choose the correct version
Select the appropriate option according to the condition of your current installation.
| Part number | Version | What's included | Recommended if... |
|---|---|---|---|
| 21916C | Without vessel | Cell only (electrode) | Your current vessel is in good condition and you only need to replace the cell |
| 21906C | With housing | Cell + complete housing | You need to replace the complete assembly or your current housing is damaged |
If you have any doubts, check your installation before purchasing. Choosing the wrong version is the most common mistake with this replacement part.
Technical specifications
| Feature | Detail |
|---|---|
| Part number | 21906C |
| Product | Complete electrode / cell |
| Brand | CTX Certikin |
| Compatible range | Salt Expert |
| Production | 25 g/h |
| Configuration | With housing |
| Application | Replacement part for salt chlorinator |
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What does this replacement part provide?
The cell is the component responsible for converting salt into chlorine inside the equipment. With use, it loses efficiency and the system stops operating normally.
This version with housing allows you to replace the complete assembly and restore the chlorinator's chlorine production when not only the cell is worn out, but the housing or its mounting also shows signs of wear.
Frequently asked questions
Does this part include the housing?
Yes. Part number 21906C corresponds to the version with housing.
What is the difference between 21906C and 21916C?
The 21906C includes the cell together with the complete housing. The 21916C includes the cell only.
Is it compatible with any CTX salt chlorinator?
No. It must match the Salt Expert 25 g/h range and the equipment configuration exactly.
When is it advisable to choose the version with housing?
When the current housing is damaged, shows wear, or you prefer to replace the complete assembly to avoid incompatibilities or installing it on aged components.
Is it an original replacement part?
Yes, this is an original CTX Certikin part.

