This product is an on board nitrogen generator. Most companies purchase nitrogen in cylinders at about 2000 p.s.i. We at Pit Crew Tire Service have chosen to invest in a system that will create nitrogen on demand and store it in an on-board 80 gal storage tank at low pressure. (170 p.s.i. for safety concerns) The USA trails European tire technology by about 10 years.
The pH scale indicates acidity or alkalinity. A soil with a pH number below 7 is acid, while one with a pH above 7 is alkaline. Garden plants typically grow best in neutral or slightly acid soil (pH 7 or slightly below; see illustration at left).
Acidifying the Soil. 1  1. Identify your soil type. 2  2. Add organic materials to well-drained, loose soils. 3  3. Add elemental sulfur to soil that is heavily compacted or which has lots of clay.  4. Add iron sulfate to soil that is heavily compacted or has lots of 1  clay. 5. Use a fertilizer containing ammonia.