GOST 13907-86

Water quality. Enumeration of culturable micro-organisms. Colony count by inoculation in a nutrient agar culture medium

Hexagon socket set screws with flat point

Pattern plates with changeable wooden inserts for moulding box having inside dimensions 1200x1000 mm for moulding foundry machines with turn of half mould without squeezing. Design and dimensions

Indoor air. Part 36. Standard method for assessing the reduction rate of culturable airborne bacteria by air purifiers using a test chamber

Collar hexagon nuts. Construction

Motor and aviation gasolines. Determination of benzene by method of infrared spectroscopy