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Alginate 3D Gel Blue Alginate 3D Gel Blue

Alginate 3D Gel Blue

Alginate Blue (or 3-D Gel) is dried seaweed powder and thus a 100% natural product that is used primarily to copy parts of the body quickly and easily.

19 items in stock

  • Excl. BTW €8,22
  • Incl. BTW€9,95

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  • 15 kg bag
  • Gels fast
  • Easy to mix
  • ratio water : powder = 5 : 1 (in weight)
  • After gelling relatively strong
  • Copies every detail
  • Pleasant (mint) flavor
  • Blue

Alginate 3D Gel Blue

This product is ideal for making a mold of little hands / feet.

3-D Gel Blue is a 100% natural product that is used primarily to copy parts of the body quickly and easily. The gel is easy to use, cures within minutes and copies the smallest details. The gel is completely harmless to humans and the environment. After use one can simply throw the alginate mould in the trash or on the compost heap.

Technical data

Mixing ratio (weight) for pouring or dipping

[Water: gel]

5:1 (e.g. 500 g alginate & 2500 g water)

Mixing ratio (weight) for brushing or spreading

[Water: gel]

3:1 (e.g. 500 g alginate & 1500 g water)

Pot Life @ 20 ° C 



De-mould time @ 20ºC



Full strength after




Please familiarise yourself with this product first by doing a small test. For example make a coffee cup of alginate and dip your finger in it.


The mixing ratio is in weight and not in volume. E.g. mix 100 grams of alginate with 500 grams of water. The 3-D gel Blue can be mixed easily with a mixer until a nice even porridge without lumps is obtained. If you suffer from lumps in the powder we recommend to sieve these out prior to adding water.
Mix the required amount of water with the alginate in one go. If a few lumps are left do not worry. Do not continue mixing too long. Otherwise the alginate will start to harden!

After mixing, push the desired part of the body with the correct position in the mixture. We recommend using a position that entraps as little air as possible. Try to release as many air bubbles attached to the skin as possible by moving the body part or rubbing along the skin. After this try to move as little as possible and make sure you do not touch the edges of the mixing bowl. Wait until it has cured completely within +/- 5 minutes. The mold is now ready and can be filled with plaster, concrete, wax or many other casting compounds. The mold can be used once, and has a life span of a number of hours.

Accelerator: The processing time will be much shorter if you use (luke-) warm or hot water!
Retarder: The processing time can be increased by using cold water without minerals and salt (demineralised water).

If you prefer to brush or spread the alginate -as is normally done on a belly or face-  we advise to use thicker alginate by using a mix ratio of water:alginate=3:1. So e.g. 300 gram water with 100 gram alginate Blue.

This material is only available in 15 kg bags.

Shelf life
Provided that the 3-D Gel is kept in a sealed container in a cool and dry area, the shelf life is 1-2 years. After opening and sufficiently sealing the shelf life will be about 6 months.

To our knowledge, the 3-D gel completely harmless to humans and the environment.
For more information, see the medical data sheet.

Color :


end Color :


Working Time @ 20 ° C :

15 minutes

tensile strength :

0.6 N/mm2

Mixing ratio A: B :


compressive strength :

> 0.8 MPa

Document Download
Product Information




Baby hand 0-1 years

550 ml beaker

80 gr. alginate + 
400 gr. water

150 gr. plaster + 
35 gr. water

Children's Hand 2-10 years

1100 ml beaker

140 gr. alginate + 
700 gr. water

300 gr. plaster + 
75 gr. water

Woman Hand / child> 10

1100 ml beaker

170 gr. alginate + 
850 gr. water

600 gr. plaster + 
150 gr. water

male hand

1900 ml beaker

240 gr. alginate + 
1200 gr. water

800 gr. plaster + 
200 gr. water

Tutorial how to copy a hand with ALginat and Gypsum

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