2016/06/01 · High range, 0-1500 mg/L – Chloride 0 – 200 mg/L – Ammonia 0 – 50 mg/L. Ultra High range, 0 – 15,000 mg/L – Chloride 0 – 2000 mg/L – Ammonia 0 – 500 mg/. For more information on anything COD get in touch with our technical team on 01954233120, send us an email support@camlab.co.uk or fill in the form below.