5 x 25gram Silica Tyvek Tough Packs for Optics Protection


or 4 fortnightly payments of $3.74 with Afterpay More info

Welcome to our Most Popular Moisture Control Line – It drinks up moisture from the air, stops condensation within enclosed storage areas, protects against mold, mildew and corrosion.

“It’s a miniature dehumidifier working night and day … yet needs no electricity.”

Why Moisture Control is Starting to be taken more seriously by Astronomers:

  • Mould growth begins when a single spore of fungus lands, absorbs moisture and swells in size to form hyphae.  They spread and extend across the surface and grow best in dark, damp conditions.  Prevention of mould growth cannot be achieved without proper moisture control. 
  • Once it starts to grow, it is difficult to get rid of, and can ruins optics in a short period of time by eating into the glass / flourite and optics of our equipment.
  • Astronomy Equipment is particularly vulnerable as it usually not taken out during the day, may come in moist, or become moist when taken into the warm indoors from the cold outdoors.   


  • Needs No Electricity – Works Passively

  • Can prevent moisture damage to optical and scientific instruments, electrical goods and electronic components, metal parts and leather.
  • Silica Gel combats the formation of mildew, fungus, mold, fogging, rust, corrosion
  • We include a Humidity Indicator Card
  • Size is 90mm x 78mm, weight is 25gr, five supplied.

What’s unique about your order:

  • We ship from Brisbane – Not China

  • Full Tracking with Australia Post

  • We securely pack it in padded packaging- you will not get this item delivered in a flimsy bag.

High Performance White Silica Gel

As a rough guide, each 25 gram sachet will protect up to 50L – This pack includes five of them (Total 125gr.).

Silica gel packets can prevent moisture damage to optical and scientific instruments, electrical goods and electronic components (internally and externally), communication equipment, metallic parts, leather goods, tools and many other small to medium sized items in use, storage or transit.
It prevents all forms of rust, corrosion, oxidation, mildew, fungus, mold, fogging, etc. Silica Gel is used to prevent tarnish on gold and silver, in your tool box to protect your precious tools from rusting, or drop some in your camera bag to protect your camera and equipment. It even protects expensive leather items like jackets, shoes, and boots. Also great for tackle boxes, photo albums, computer media storage, gun cases, ammo boxes, coin collections, camping gear, backpacks, campers, electronics, etc.
Our most popular being the Dupont Tyvek packets, Tyvek is strong, lightweight, flexible, smooth, low-linting, and is resistant to chemicals, abrasion, and ageing. The Tyvek bag is also extremely tear-resistant, providing extra protection for your product.  Tyvek bags meet the requirements of the U.S. Food and Drug Administration for use in direct contact with foods and drugs.

White Silica Gel Performance

RH=20% Absorption capacity 10% of its weight
RH=50% Absorption capacity 23% of its weight
RH=90% Absorption capacity 36% of its weight

Did we mention free shipping, and Jelly beans?

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