Tl, 1000 µg/mL in 5% HNO3, 100ml Back Catalog number: VHG-PTLN-100 Availability: In the manufacturer's stock Price on request - + Recommended VHG-PCON-100 Co @ 1000 µg/mL in 5% HNO3, 100ml Price on request 54104 Nitrite (NO2-) as N, 1000µg/ml in Water, 100ml Price on request 54106 Sulfate (SO4-2), 1000µg/ml in Water, 100ml Price on request