Forum:Why are Vita Chambers throughout Rapture if they're still in testing?

The Wikia page on Vita Chambers states that splicers can't use them because they are still in testing, and, as per Suchong's audiodiary, are only keyed to Andrew Ryan's genetic frequency. But surely a product still in testing would not be distributed throughout Rapture. Only once testing was complete, the Vita Chambers were no longer keyed specifically to Ryan's genetic frequency, and had advanced into production, would they be placed in every part of the city. Or am I missing something?