The BK Drying Time Recorder measures and records the Drying Time of Surface piant, coatings, inks and so much more. It is CE approved.
Stages in the Drying Process Defined as: The drying time of alkyds, varnishes or paints is determined by adding the requisite drier and thinning to a viscosity at which the material is normally applied. The finish is allowed to stand at room temperature for 24 hours to "mature". A test strip measuring 12" x 1" (which may be of plain or ground glass or of other suitable material) is prepared by casting a film upon it by means of a special applicator which is accurately ground at one end to deposit a wet film thickness of 1.5 mils and 3 mils at the other. The test strips are placed on the table in their holders and the instrument is then operated as indicated below.
Although all stages recorded are significant it is often sufficient to express a drying time in terms of set-time and hard-dry time, thus: 1-1/4 - 4 (hours). Brass weights, each weighing 5 g, may be used to apply greater pressure on the needles and thus record the through-drying properties of alkyds, varnishes and paints. The 3-SPEED BK DRYING RECORDER will give useful information about the gelation times of many two component surface coating materials and about the properties of such films.
11334 - BK3 Recorders come complete with six needles, a set of clear glass test strips and stainless steel applicator with 3 mil and 6 mil cuts (75 mu and 150 mu cuts)
11330 - BK10 Drying Recorders come complete with ten needles and a set of clear glass test strips and stainless steel applicator with 3 mil and 6 mil cuts (75 mu and 150 mu cuts)