The Density of a coating should remain conastant from batch to batch. Also known as Density Cups or Specific Gravity Cups, Picnometers are used to determine the specific weight per unit volume of a liquid at a given temperature.

The Elcometer 1800 consists of a stainless steel or anodised aluminium precision instrument for determining the specific weight of paints and similar products.

This instrument consists of a cylindrical container and cover with a hole for exhaust of tested liquid excess.

Three capacities are available: 50, 83 or 100cc. These can be supplied with or without a tare weight for weighing on a balance.