500 ml solution contains 50 mg/L Al, As, Ba,Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb, Se, Sr, Zn and 500 mg/L K in 5% HNO₃ + tr HF. Solution must be diluted 10 times prior to use.

• Concentrate for dilution
• Packaged in pre-leached HDPE bottles, secured with a tamper-evident seal