Monthly Archives: February 2019
-
Posted: February 28, 2019Read more »
This chart is intended as a general guide for various materials and chemicals. It shows some of the materials used in Terra’s products and chemicals likely to be used with them. Testing is strongly recommended for extreme conditions of use, such as prolonged exposure or immersion, high temperatures and high concentrations. The acids, caustics and salts in this chart are assumed to be in solution. Materials may react differently to the pure substances (glacial acetic acid, for example). See Terra Universal's line of Rubber & Synthetic Gloves.
Hazards Key
Hazards (Only the primary ones are shown. For example, chlorine is not shown as an asphyxiant because
-
Posted: February 15, 2019Read more »
This chart is intended as a general guide for various materials and chemicals. It shows some of the materials used in Terra’s products and chemicals likely to be used with them. Testing is strongly recommended for extreme conditions of use, such as prolonged exposure or immersion, high temperatures and high concentrations. The acids, caustics and salts in this chart are assumed to be in solution. Materials may react differently to the pure substances (glacial acetic acid, for example). See Terra Universal's line of metal Pass-Throughs.
Hazards Key
Hazards (Only the primary ones are shown. For example, chlorine is not shown as an asphyxiant because its toxicity will kill you first).
-
Posted: February 01, 2019Categories: Cleanrooms
Read more »Hidden Costs of Acrylic Enclosures
Compared to acrylic, static-dissipative PVC offers three benefits that reduce operating expenses and drive down overall ownership cost of a clean room, glove box, hood, desiccator, or other enclosure.
Contamination Control
Acrylic is a prolific static generator. The back-and-forth motion of wiping an acrylic surface creates positive and negative surface charges that attract and hold small particles.
The resulting static cling makes it difficult to remove contaminants from the charged surfaces without the use of ionizing equipment or frequent cleaning with special anti-static solutions. Variations in the surface charges can lead to unpredictable release of aggregated particles,
-
Posted: February 01, 2019Categories: CleanroomsRead more »
Terra Universal will certify its cleanrooms to guarantee “as built” compliance with cleanliness standards. What matters, though, is how the cleanroom performs in real world applications—in your application, with your personnel and processing equipment.
Careful consideration of these operating conditions will help you select the configuration that meets your requirements and fits your budget!
Cost vs. Coverage: Evaluating FFU Placement
The cleanest modular cleanroom incorporates filter/fan units (FFUs) in every 2' x 4' (610 mm x 1219 mm) ceiling bay. This near-100% ceiling coverage provides a laminar flow of filtered air to quickly remove contaminants from the cleanroom, meeting ISO 3 or ISO 4 (Federal Standard 209(E) Class 1 or Class 10) environments (depending on the filter types selected, HEPA or ULPA).
Of course, 100% ceiling coverage requires substantial investment in FFUs, especially if the cleanroom is very large.
