为了减轻设备问题（包括计算机和手机在内的个人电子设备，到工业自动化系统），由于湿度而受损，行业标准要求SMD，PCB和其他敏感产品运输并存储在水分保护包装中干包。这些“干袋”由水分式锁定袋，干燥剂和湿度指示卡（HIC）组成。
克拉利安, a provider of specialty chemical systems, creates dessicants and HICs to meet these requirements. The company’s HICs are designed to signify the presence—or absence—of moisture via moisture-sensitive spots that change color when moisture exposure occurs. Traditionally, the moisture-reactive material used in these indicator spots is a halogen compound, such as cobalt dibromide (CoBr2), copper dichloride (CuCl2) or copper dibromide (CuBr2).
Conventional Type 1 HICs are “reversible” and only reflect current levels of humidity. In dry packs with improper, defective, or damaged seals, exposure to high humidity (>60%) can occur, but it may not be reflected on a Type 1 reversible card. A Type 1 reversible HIC would register humidity exposure via a color change from blue (dry conditions) to pink (wet conditions).
However, once returned to a low humidity environment, the reversible spot would change back to blue, indicating the current lower humidity level. This Type 1 HIC would show no evidence of the earlier high humidity exposure which could indicate potential damage to the PCBs or SMDs.
为了响应1型可逆性HIC的局限性，Clariant开发了2型HIC，这是一种“非可逆”卤素和二氯化钴含量。这种2型HIC的湿度指示剂具有不可逆的60％的湿度指标，该指标旨在在水分暴露后保持蓝色。当60％RH点在长时间内暴露于湿度时，蓝色旨在迁移到指示圆之外，以提供永久的湿度暴露信号。
该公司还消除了60％RH斑点中的钴二溴化物（COBR2），因此2型HIC HIC可以提供改进的环境概况。因此，与其HIC 1型前任相比，制作造成2型HIC代表了超过50％的总体卤素减少。由于偶然的处置和不受限制地调节电子设备的回收率兴起，卤素已成为特别关注的问题。
This HIC products passes the BS EN 14582, a widely accepted halogen test method, meets Joint Electron Device Engineering Council (IPC/JEDEC) standards and applicable Registration, Evaluation, Authorisation, and Restriction of Chemicals (REACH) regulations, the according to the company.
