Tetrahydrofuran Back Catalog number: 79507 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50077 Total Kjeldahl Nitrogen (N), 100µg/ml in Water, 100ml Price on request 0132.30-100-IO 17 alpha(H),21ß(H)-Hopane, 100µg/mL in Isooctane, 1ml Price on request 50378 Potassium (K) Price on request