The aim of this forum is to facilitate exchange of information and discussions related to insect production, between ERGIP members. The ERGIP forum is covering a broad area and hosting multiple discussion channels, such as insect technologies, insects’ genetics, insect application and insect nutrition, etc.). Furthermore, it is within the scope of this forum to provide young scientists with a channel (young scientist corner) for discussing and disseminate latest research in insect production.

Home page Forum Equipment and technology Agar for mealworms

  • Agar for mealworms

    Posted by David on March 21, 2023 at 9:15 am


    I just wanted to share here how we make our agar as wet feed source for large experiments with mealworms. Sometimes we need about 20L a day so most of the labscale methods did not work for us.

    First round:

    We used a big cooking pot on an electrical fire, works well but this is very slow and prone to boiling over or burning or getting big lumps of agar.

    Second round:

    We now bought a big teakettle (e.g. Waterkoker Met Digitaal Display | 353x345x(h)598mm ( and this works quite a bit better. The water can cook without looking at it or stirring it so we do not lose any time anymore. After that we pour it into a big measuring cup with agar (25g/L) while stirring. We can’t do 10 liter in a single batch anymore because it cools down to fast, but making 2 liter batches goes very fast now.

    How are you doing it? Are there ways to improve on our method?

    David replied 1 year, 1 month ago 2 Members · 2 Replies
  • 2 Replies
  • Ivã

    May 2, 2023 at 7:42 am

    Nice approach! I never cooked so much agar at once like this (top was 3L in one batch), but I wondered, 25 g/L works well? I imagine it is very easy to cut it because it is very very solid, right? We used 7g/L and it was already sort of easy to cut into pieces and provide to the larvae.

  • David

    May 3, 2023 at 7:14 am

    Hi Iva,

    The agar is indeed very solid, but the main reason why I use 25g/L we use is to avoid leakage in the wheat bran an reduced dehydratation. When we tried 7 g (much cheaper) it did not go very well.

Log in to reply.