Our condensate neutralizer recharge kits are available for neutralizers of all sizes. All Neutra-Safe® recharge kits include replacement O-rings when applicable. The improved formula of calcite and magnesium oxide is available in refill kits for any of Neutra-Safe®'s condensate neutralizers. Professional service technicians should inspect and recharge Neutra-Safe® condensate neutralizers on an annual basis at minimum. All 2 in tube style neutralizers and the tray model can be refilled quickly and efficiently with Neutra-Safe®'s unique sack recharge kit. The media in the refill kit is contained in a special fabric sack making installation a snap.