| Chemical element utilised in water purification |
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| Companion learning about popular chemical element |
The Times Cryptic |
02 May 2023 |
| Gas, Cl |
The Guardian Quick |
31 Mar 2023 |
| Backbone injected with liquid initially, or gas |
The Guardian Cryptic |
31 Jan 2023 |
| Makes water safe to drink and swim |
Irish Times Simplex |
15 Mar 2022 |
| It's used to purify swimming pools |
Irish Times Simplex |
01 Nov 2021 |
| Gaseous element |
The Telegraph Quick |
15 Oct 2021 |
| Bleach ingredient |
Wall Street Journal |
14 Aug 2021 |
| It's used to purify swimming pools |
Irish Times Simplex |
22 Feb 2021 |
| 150 of the Romans stand for disinfectant |
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| . Part of Salt Lake City with heroin in circulation |
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| It's used to purify a swimming pool |
Irish Times Simplex |
03 May 2017 |
| Algae-killing chemical |
USA Today |
01 Nov 2016 |
| Yellowish-green gas |
The Times Concise |
07 Sep 2016 |
| Gaseous element |
The Times Concise |
27 Mar 2015 |
| Its name is derived from the Greek for "pale green" |
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| Powerful oxidant |
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| Swimming pool additive |
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| Table salt component |
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| It's added to the pool |
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| Green gas |
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| Water purifier |
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| Pool room emanation |
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| Pool room emanation |
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| Pool additive |
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| Water additive |
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| Pool necessity |
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