Ascent Opti SPD A is a complete configurable Sentinel microprocessor control with audible and visual alarms for unsafe conditions. Grade 304 stainless steel work surface that will never rust, chip, or generate particles. It has less noise levels at 55 dBA. It consume exceptional low energy consumption. Isocide antimicrobial coated structure eliminates 99.9% of bacterial presence on external surfaces within 24 hours. Small Filter ID window to effortlessly identify the type of filter being used. Over 7 distinct Nanocarb carbon filter types, choose from volatile organic compound, acid, mercury, sulphur, halogen, aldehyde or ammonia. Cart is appareled with shelves for storage purposes. Optional mobile cart for convenient relocation. Optional transparent back, optimal for classroom demonstrations. It has two provisions for electrical wiring at the back to easily connect any apparatus to a power supply from inside the main chamber. Removable work surface on a removable drain pan for easy cleaning.