RE:RE:RE:RE:Admission Chamber MUSt Be Changed Each Time It's a cost of doing business. The GreatGazoo is a player on these boards pushing his own agenda and he will do so in any deceitful manner possible. He did so by suggesting that these cartridges have to be changed every day. If no virus, then every three months at a cost of up to $1,200 per year, not $110,000. How much does it cost for a place not to manage its risk to the best extent possible and be shut down for more time than necessary? The cost of a cartridge is ridiculous in this context and so is the cost of the BioCloud when taking into account that its life is a decade...US$1,200 per year, or a few bucks per day.