Dry Silica
Silica Gel Beads I use:
Silica Gel Orange (Green), 1kg or 10kg, shipping via BOL.com https://silica-gel-shop.nl/product/silica-gel-orange-3-5mm-1-10kg/
ISOLATECH Silica Gel regenerierbar Trockenmittel auch als Filament Trockner geeignet orange 1kg Beutel Silicagel Kugeln als Kieselgel Silikagel Entfeuchter https://www.amazon.de/dp/B0DJQWXVK7/
Silica Gel White 3-5mm, 1kg or 10kg https://silica-gel-shop.nl/product/silica-gel-wit-3-5mm-1-10kg/
Two types of indicating silica gel: Orange and blue
Orange indicating silica gel desiccant
Orange indicating silica gel appears orange or yellow in color when dry and transitions to green as the desiccant progressively saturates with moisture (to about 15% by weight).
In addition, orange silica gel is a non-toxic, pollution-free desiccant that will meet the needs of environmentally conscious companies. This orange silica gel can be used in many applications where visual control of moisture is required, such as in compressed air dryers, breathers, and for protection of non‐consumable packaged goods, as well as drying and storing flowers and seeds. That said, orange silica gel should not be used in direct contact with products that are intended for consumption, such as food and pharmaceuticals.
USE ORANGE SILICA GEL or White Silica Beads!
BLUE INDICATING SILICA GEL
Blue indicating silica gel is a bead or granule that has been washed with a concentration of cobalt chloride (a heavy metal salt). The cobalt chloride is a deep-blue color when dry and transitions from blue to pink as the desiccant saturates.
Blue silica gel can be used in many of the same applications as orange silica gel; however, due to the addition of the moisture indicator (cobalt chloride), blue silica gel should not be used in direct contact with products intended for consumption, such as food or pharmaceuticals.
WHY USE ORANGE INDICATING SILICA GEL?
In 1998, the European Union prohibited Blue Indicating Silica Gel (which contains cobalt chloride, a known human toxin) from being sold within European markets. Alternatively, orange indicating silica gel, which is used in a variety of the same industries and applications, such as transformer breathers and compressed air dryers, conforms to the European Union requirements for moisture indicating desiccants.
In addition to conforming to EU requirements, AGM’s orange indicating silica gel also has a high adsorption capacity, and will remove moisture at temperatures as high as 150° F (65°C). However, it is best used at room temperature (70‐90° F /21-32°C).