Hex Key, 2mm Back Catalog number: 380-0036-01-R Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GF37TQ Filter, Tissue Quartz, (99.90% retention of 0.3µm Price on request 375-0008-01 Protective Rubber Boot for Nephelometer Price on request 783-0008-04 Battery Pack, Replacement BDX II, NiMH Price on request