NWTPH-Gx Surrogate Mix Back Catalog number: 51139 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2134.21-K-IO Tri-m-tolylphosphate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 563-04-2 Price on request MT6003 N, P, K soil test kit incl. 25 sachets each of nitrogen (MT5009), Phosphorous (MT5010), Potassium (MT5002), 3 x 100mL bottles of extraction solution, 3 colour cards,5 vials,1 vial holder,1 brush,3 pipettes,1measuring spoon and soil test handbook. Price on request 673695 S421, 10 µg/ml, Ethyl acetate, 10ml Price on request