This equipment is light portable, compact and efficient with built in control. The unit has 40 digestion tubes of 75 ml volume. The unit is supplied with (1) Digester (made of casted Aluminum having 40 tubes holes for digestion tube) and (2) A1 Detection Tube stand. Temperature is controlled by Energy Regulator up to 400ºC. Complete with two pilot lamp, plug & cord (but without glass tubes). To work on 220230V AC Optional Accessories 1. Digital Temperature Indicator Cum Controlled