Desiccants


Here you can find:

Further accessories all:



Silica gels for drying

topSilica gel E


spherical beads
1 - 3  mm
2 - 4 mm
3 - 6 mm
4 - 8 mm

Non-indicating: spherical beads, white, glassy. Apparent density ap. 750 g/l. The globular shape of the beads allows the air to pass more easily. Beads are therefore most appropriate if silica gel is to be used in thick layers. Internal surface area: 800 m²/g.

Adsorption capacity in percent by weight (25°C):

  • RH = 20% / 11 %
  • RH = 40% / 20 %
  • RH = 80% / 34 %
Silica gel E, non indicating
granular size: 3 - 6 mm   granular size: 2-5 mm   granular size: 1-3 mm
5 kg
38,- €
5 kg
38,- €
5 kg
42,- €
10 kg
72,- €
 
10 kg
72,- €
 
10 kg
80,- €
25 kg
172,- €
 
25 kg
172,- €
 
25 kg
188,- €
100 kg 650,- €   100 kg 650,- €   100 kg 720,- €
              order
 
 
Silica gel Material Safety Data Sheet

topSilica gel powder

  Ideal for drying flowers. Granular size: 0,2 - 1,0 mm, amorphous. White, glassy. Apparent density: >= 670 g/l.

Silica gel E powdery, 0,2 - 1 mm
Adsorption capacity in percent by weight (25°C):
  • RH = 20% / 11 %
  • RH = 40% / 22 %
  • RH = 80% / 33 %

 

1 kg10,- €
5 kg38,- €
10 kg72,- €
25 kg 172,- €
100 kg 650,- €

topSilica gel "neo-blue"

Silica gel "neo-blue"

 

Silica gel "neo-blue" (saturated)

Granular size: 2 - 5 mm, round beads . This product is replacing the indicating "blue gel" currently presumed to cause cancer. Depending on its moisture content, silica gel neoblue changes its colour from blue to red. Silica gel neoblue can be blended with non indicating silica gel, e.g. at a weight ratio of for example 1:10. Regeneration temperature should not exceed 140°C in order not to damage the indicator.

The colour shift from blue to red occurs between 15 - 45% RH.
So the colour shift is giving you a good idea about the remaining capacity of the silica gel.

For special applications we still offer cobalt containing blue gel (in stock: 2 - 5 mm or 4 - 8 mm). Prices upon request.

Bulk density: 780 g /l
Internal surface area : 780 m²/g,
Pore volume: 0,35 - 0,4 ml/g,
Average pore diameter : 20 - 30 A
Silikagel neo-blue, round beads, 2 - 5 mm, packed in bags of 25 kg
Adsorption capacity in percent by weight (25°C):
  • RH = 20% / 11 weight %
  • RH = 50% / 27 weight %
  • RH = 90% / 39 weight %
1 kg 15,- €
5 kg 60,- €
10 kg 110,- €
25 kg 260,- €
100 kg please inquire!
500 kg please inquire!

topOrange silica gel

Indicating silica gel, spherical beads. This product is replacing the indicating "blue gel" currently presumed to cause cancer. Depending on its moisture content, orange silica gel changes its colour from orange to colourless. Orange silica gel can be blended with non indicating silica gel, e.g. at a weight ratio of 1:5.
Regeneration temperature should not exceed 140°C in order not to damage the indicator (phenolphtaleine).

The colour change from orange to translucent occurs at 5 - 9% RH, so it's not indicating saturation of the silica gel. There is a lot of adsorption capacity remaining after the colour change has taken place.

Bulk density: 0,75 g/cm³
Internal surface area : 800 m²/g,
Pore volume: 0,42 ml/g,
Average pore diameter : 25 A
pH (10 % aqueous suspension) 2,0

Orange silica gel, 2 - 5 mm , spherical beads, packed in boxes of 28 kg
Adsorption capacity in percent by weight (25°C):
  • RH = 10% / 6 weight %
  • RH = 80% / 40 weight %

1 kg 22,- €
5 kg 95,- €
10 kg 180,- €
28 kg 406,- €

topSilica gel type M

6 - 10 mm

Silica gel M (macro-porous) has a much higher adsorption capacity than silica gel type E. However, the adsorption of water mainly takes place in the wet region, between 80 - 100 % RH. Therefore it only can be used in special circumstances, mainly to prevent condensation of water.
Silica gel type M, waterproof, 6 - 10 mm: spherical, whitish
Adsorption capacity >70 weight % at 100 % RH.

Compared to ordinary silica gel type M this "waterproof"
style doesn't break if liquid water is poured on it (water resistance > 90 %).
5 kg38,- €
10 kg72,- €
25 kg172,- €
100 kg 660,- €
order
(large quantities upon request)


DESICCANT BAGS

topDESI PAK

Bags of natural clay (bentonite) in non-woven bags, dust-proof according to DIN 55473, Bentonite is a non-poisonous natural mineral. DESI PAK bags are approved for packing of food and pharmaceutics (also FDA-approved).

Bentonite can be used for drying up to 50°C. For transports to tropical regions silica gel should be preferred. The vapor uptake of bentonite is similar to silica gel up to an equilibrium moisture content of 40% RH. Above 40% RH, silica gel performs better than bentonite.

The necessary amount of desiccant bags can be calculated if you use a vapour barrier foil with known characteristics and if all edges are well sealed: For HDPE 0,2 mm, you should calculate with a vapour permeation of 0,4 g/m²/day for moderate climate and of 2,0 g/m²/day for tropical climates. For aluminum barrier film you can calculate with 0,1 g/m²/day regardless the climate. If your object is too wet when packed you have to add extra bags.

The bags 6 g, 12g and 16 g can be re-generated many times at 110C, in any conventional household oven at 110C, for 2 - 4 h. Fan ovens are ideal for this purpose. To check if your bags still release vapour place a hot bag an a cold mirror or cold shiny metal plate. If the bag still releases vapour there will be dew on the mirror immediately. Once the bags are cold you also can check with the humidity indicator strip 8% RH delivered along with the bags.

The bags 30 g - 1000 g can not be re-generated, as their bag material shrinks at temperatures > 100C. If you intend to re-generate your bags please use Claypack instead (see below)

DESI PAK 6 g (1/6 unit), 60 x 60 x 8 mm, moisture adsorption: ap. 1 g between 0 % RH and 40% RH (1 box = 1.500 pcs.)
100 bags:19,- € 500 bags:80,- € 1.500 bags: 187,- € 9.000 bags: 1.066,- € order
DESI PAK 12 g (1/3 unit), 90 x 60 x 8 mm, moisture adsorption: ap. 2 g between 0 % RH and 40% RH (1 box = 1.040 pcs.)
80 bags:20,- € 400 bags:88,- € 1.040 bags: 182,- € 6.240 bags: 1.037- € order
DESI PAK 16 g (1/2 unit), 105 x 60 x 8 mm, moisture adsorption: ap. 3 g between 0 % RH and 40% RH (1 box = 780 pcs.)
60 bags:20,- € 300 bags:84,- € 780 bags: 159,- € 4.680 bags: 905,- € order
DESI PAK 30 g (1 unit), 100 x 65 x 10 mm, moisture adsorption: ap. 6 g between 0 % RH and 40% RH (1 box = 350 pcs.)
50 bags:22,- € 150 bags:57,- € 350 bags:105,- € 2.100 bags:598,- € order
DESI PAK 65 g (2 units), 115 x 85 x 15 mm, moisture adsorption: ap. 12 g between 0 % RH and 40% RH (1 box = 210 pcs.)
30 bags:22,- € 90 bags:54,- € 210 bags:105,- € 1.260 bags:598,- € order
DESI PAK 125 g (4 units), 155 x 85 x 13 mm, moisture adsorption: ap. 24 g between 0 % RH and 40% RH (1 box = 105 pcs.)
15 bags:18,- € 45 bags:45,- € 105 bags:95,- € 630 bags:533,- € order
DESI PAK 250 g (8 units), 150 x145 x 18 mm, moisture adsorption: ap. 48 g between 0 % RH and 40% RH (1 box = 60 pcs.)
10 bags:20,- € 30 bags: 51,- € 60 bags: 90,- € 360 bags: 513,- € order
DESI PAK 500 g (16 units), 260 x 145 x 23 mm, moisture adsorption: ap. 96 g between 0 % RH and 40% RH (1 box = 30 pcs.)
5 bags:18,- € 15 bags:45,- € 30 bags: 78,- € 180 bags:445,- € order
DESI PAK 1000 g (32 units), 285 x 200 x 30 mm, moisture adsorption: ap. 184 g between 0 % RH and 40% RH (1 box = 15 pcs.)
3 bags: 18,- € 9 bags: 48,- € 15 bags: 75,- € 90 bags: 429,- € order

nach obenCLAY PACK


CLAY PACK

Bags of natural clay (bentonite) in non-woven bags, dust-proof according to DIN 55473, can be re-generated many times at 110°C. Bentonite is a non-poisonous natural mineral. DESI PAK bags are approved for packing of food and pharmaceutics (also FDA-approved).

Bentonite can be used for drying up to 50°C. For transports to tropical regions silica gel should be preferred. The vapor uptake of bentonite is similar to silica gel up to an equilibrium moisture content of 40% RH. Above 40% RH, silica gel performs better than bentonite.

The necessary amount of desiccant bags can be calculated if you use a vapour barrier foil with known characteristics and if all edges are well sealed: For HDPE 0,2 mm, you should calculate with a vapour permeation of 0,4 g/m²/day for moderate climate and of 2,0 g/m²/day for tropical climates.
For aluminum barrier film you can calculate with 0,1 g/m²/day regardless the climate. If your object is too wet when packed you have to add extra bags.

Re-generation can be done in any conventional household oven at 110C, for 2 - 4 h. Fan ovens are ideal for this purpose. To check if your bags still release vapour place a hot bag an a cold mirror or cold shiny metal plate. If the bag still releases vapour there will be dew on the mirror immediately. Once the bags are cold you also can check with the humidity indicator strip 8% RH delivered along with the bags.

Prices for larger quantities upon request.

For these bags you can use self-adhesive humidity indicator strips 40% RH.

CLAY PACK 30 g (1 unit), 100 x 80 x 8 mm, moisture adsorption: ap. 6 g between 0 % RH and 40% RH (1 box = 500 pcs.), US MIL SPEC D-3464 E/1.+411
 20 bags:6,50 € 120 bags:36,- € 500 bags: 130,- €  2000 bags: 480,- € order
CLAY PACK 65 g (2 units), 130 x 70 x 15 mm, moisture adsorption: ap. 12 g between 0 % RH and 40% RH (1 box = 280 pcs.), US MIL SPEC D-3464 E/1.+11
 20 bags:7,80 € 60  bags:21,- € 280 bags: 86,80 € 1400 bags: 392,- € order
CLAY PACK 500 g (16 units), 180 x 140 x 30 mm, moisture adsorption: ap. 96 g between 0 % RH and 40% RH (1 box = 30 pcs.),  US MIL SPEC D-3464 E - DIN 55473
 4 bags: 10,50 €  12 bags:28,- € 30  bags: 63,- € 150  bags: 283,- € order

topSilica gel bags

Cheap silica gel bags from China

The non-woven bags have good dust retention, but they are not dustproof according to DIN. The TYVEK-bags are dustproof - excellent quality at a low price, for example for packaging electronic components! Weight indications refer to the gross weight.

All these bags are not approved for food and pharmaceuticals (for these applications please use the Minibags below)
Adsorption capacity: >= 11% at 20% RH, >= 22% at 40% RH, >= 33% at 80% RH.

The paper bags can be re-generated at 130°C, the TYVEK bags at 110°C. The non-woven bags are intended for single use, since the bag material doesn't withstand regeneration temperature .

Silica gel bags 1g, ca. 40 x 25 mm, bag material: paper, can be re-generated at <130°C
1000 bags: 15,- € 5000 bags: 70,- € 10 000 bags: 134,- € 20 000 bags: 258,- € order
Silica gel bags 1g, ca. 45 x 25 mm, bag material: TYVEK, dust proof, can be re-generated at <130°C
1000 bags: 21,- € 5000 bags: 98,- € 10 000 bags: 188,- € 20 000 bags: 360,- € order
Silica gel bags 2g, ca. 45 x 30 mm, bag material: paper, can be re-generated at <130°C
1000 bags: 27,- € 5000 bags: 126,- € 10 000 bags: 240,- € 20 000 bags: 464,- € order
Silica gel bags 2g, ca. 45 x 28 mm, bag material: TYVEK, dust proof, can be re-generated at <110°C
1000 bags: 33,- € 5000 bags: 147,- € 10 000 bags: 282,- € 20 000 bags: 540,- € order
Silica gel bags 5g, ca. 50 x 50 mm, bag material: non-woven, can not be re-generated
1000 bags: 39,- € 5000 bags: 175,- € 10 000 bags: 340,- € 20 000 bags: 640,- € order
Silica gel bags 5g, ca. 50 x 44 mm, bag material: TYVEK, dust proof, can be re-generated at <110°C
1000 bags: 64,- € 5000 bags: 280,- € 10 000 bags: 555,- € 20 000 bags: 1090,- € order
Silica gel bags 10g, ca. 70 x 50 mm, bag material: non-woven, can not be re-generated
500 bags: 36,- € 2500 bags: 165,- € 5000 bags: 320,- € 10 000 bags: 630,- € order
Silica gel bags 10g, ca. 65 x 45 mm, bag material: TYVEK, dust proof, can be re-generated at <110°C
500 bags: 62,- € 2500 bags: 274,- € 5000 bags: 538,- € 10 000 bags: 1056,- € order
Silica gel bags 30g, ca. 100 x 80 mm, bag material: non-woven, can not be re-generated
200 bags : 41,- € 800 bags: 150,- € 2000 bags: 350,- € 4000 bags: 680,- €d> order
Silica gel bags 60g, ca. 110 x 80 mm, bag material: non-woven, can not be re-generated
100 bags: 40,- € 500 bags: 180,- € 1000 bags: 350,- € 2000 bags: 680,- € order
Silica gel bags 500g, ca. 210 x 130 x 35 mm, bag material: non-woven, can not be re-generated
10 bags: 36,- € 40 bags: 140,- € 100 bags: 320,- € 200 bags: 630,- € order

topMinibags

Minibag Dust proof GDT-bags filled with silica gel, dust proof according to DIN 55473, tearproof. Highest quality for optimum protection: e.g. packing of electronical or optical equipment. Approved also for food and pharmaceuticals (also FDA approved). Weight indications refer to the net weight.
These bags can be re-generated at <110°C.

Minibag 0,5 g
Size: 16 x 33 mm
1000 bags 70,- €
3000 bags 180,- €
1 box: 6000 bags 340,- €
24 000 bags 1272,- €
Minibag 1 g
Size: 19 x 36 mm
500 bags 40,- €
2000 bags 140,- €
5000 bags 320,- €
1 box: 10 000 bags 620,- €
Minibag 2g
Size: 22 x 45 mm
600 bags 60,- €
3000 bags 264,- €
1 box: 6000 bags 498,- €
24 000 bags 1896,- €
Minibag 4g
Size: 30 x 76 mm
200 bags 30,- €
1000 bags 115,- €
1 box: 2000 bags 215,- €
10 000 bags 1050,- €
Minibag 5g
Size: 70 x 27 x 10 mm
200 bags 35,- €
1250 bags 160,- €
1 box: 2500 bags 300,- €
10 000 bags 1120,- €


CONTAINER DRI® Desiccant bags


Desiccant based on calcium chloride. One bag 125 g is able to absorb up to 200 g water. The top side of the sachet is permeable to water vapour. But no liquid is seeping out regardless the position of the bag. A thickening agent (attapulgit) is absorbing all liquid. The bags can not be re-generated. They can be disposed off after use as ordinary waste.

For one 20'-container you need about 40 - 60 bags.

Weight: 125 g
Materials: Top = TYVEK, bottom = PE/PP
Content: Calcium chloride, attapulgite / polygorskit

CONTAINER DRI®-II
Size: 265 x 142 x 20 mm

10 bags 30,- €
60 bags 177,- €
120 bags348,- €
300 bags855,- €
order
(quantities > 600 upon request)


Molecular sieves

topMolecular sieves 4Å


artificial zeolith
Molecular sieves are used when an object has to be conserved in an extremely dry atmosphere, at a RH around 0% RH. They can absorb around 20% of water regardless the relative humidity. So they maintain RH close to 0% until they are saturated. Regeneration temperature: 250° - 300°C.

Molecular sieves, pore diameter: 4Å, granular size: 1,6 - 2,5 mm

Bulk density : 725 - 795 g/l
Crush resistance: >= 25 N
Water adsorption: >=21,5%, typical values 22,0 - 22,5 % (25°C, RH 55%)
Water content at delivery: <1%

Molecular sieves can be delivered packed into custom made dustproof TYVEK-bags. Supplement per bag: € 2,-, regardless the size of the bag and the weight. Prices for quantities >100 upon request.
The bag material does not withstand the re-generation temperature (so you have to open the bags and re-pack later, with a sealing instrument).
Standard sachets with molecular sieves 3Å see below.

1 kg 20,70 €
5 kg 98,- €
20 kg 216,- €
135 kg 1269,- €
order

topMolecular sieves in sachets


Molecular sieves in bags, for sharp drying. Ideal for keeping goods at very low humidity close to 0%RH. Typical applications: storage of archaeological iron or other iron artifacts containing chlorides, drying of optical systems for outdoor use, drying of insulating windows...
Water adsorption >18 weight % between 0 - 10% RH and >21 weight % at 50% RH.
Packed in aluminum bags or metal cans.

The bags can not be re-generated as such, since the bag material doesn't withstand the re-generation temperature of 250 - 300°C. (Theoretically you can open the bags, re-generate the molecular sieves and fill them back into the bags, but normally this doesn't make much sense)

Minipax 0,5 g, filled with molecular sieves 4A, approx. 27 x 16 x 3 mm, bag material: Tyvek, dustproof, 2000 bags in metal can
1000 bags: 84,- € 2000 bags: 157,- € 12000 bags: 876,- € 60000 bags: 4200,- € order
Wisemini 1 g, filled with molecular sieves 4A, approx. 37 x 20 x 4 mm, bag material: Tyvek, dustproof, 1000 bags in metal can
1000 bags: 98,- € 6000 bags: 552,- € 12000 bags: 1077,- € 60000 bags: 5205,- € order
Molpack 25 g, filled with molecular sieves 3A, granular size 0,8 - 1,2 mm, approx. 115 x 60 x 10 mm, bag material: Tyvek 1025, dustsproof
200 bags: 85,- € 600 bags: 240,- € 2400 bags: 900,- € 6000 bags: 2115,- € order
Molpack 100 g, filled with molecular sieves 3A, granular size 0,8 - 1,2 mm, approx. 150 x 80 x 20 mm, bag material: Tyvek 1025, dustsproof
50 bags: 68,- € 150 bags: 180,- € 600 bags: 690,- € 1500 bags: 1620,- € order
Molpack 250 g, filled with molecular sieves 3A, granular size 0,8 - 1,2 mm, approx. 155 x 130 x 40 mm mm, bag material: Tyvek 1025, dustproof
20 bags: 54,- € 60 bags  135,- € 240 bags: 504,- € 600 bags: 1215,- € order


Terms of sales and delivery

Products on stock are usually sent out within one week. Nevertheless, please order as early as possible. Transport is normally by FedEx Economy (±2-3 days within Europe), carriage is charged according to weight, dimensions and number of parcels.
All prices are exclusive VAT. Payments can be made within 30 days by bank transfer, within 14 days with 3% discount. All prices are subject to change without prior notice according to our terms and conditions. Check our website for actual information.


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