Plant Preservative Mixture (PPM)

$29.15 - $686.00
(34 reviews) Write a Review
0.10 LBS
1.50 (in)
2.50 (in)
2.50 (in)
Current Stock:
What is Plant Preservative Mixture (PPM) ?

Plant Preservative Mixture (PPM), is a broad-spectrum biocide/ for plant tissue culture. PPM™ is the ultimate solution to the never-ending struggle against microbial airborne, waterborne and endogenous contamination.


About Plant Preservative Mixture (PPM)

PPM™ is a heat stable preservative/biocide which can be used to effectively prevent or reduces microbial contamination in plant tissue culture.

  • At optimum doses, PPM™, which stands for Plant Preservative Mixture™, is an extremely effective Preservative/Biocide, yet does not impair in vitro seed germination, callus proliferation and callus regeneration.
  • PPM™ prevents the germination of both bacteria and fungi spores. It is heat stable and therefore can be autoclaved with the media.
  • PPM™ can be, and should be used as a standard ingredient in plant tissue culture media, and is also substantially less expensive than commonly used antibiotics.
While PPM™ was principally designed to inhibit airborne contamination, waterborne contamination and contamination introduced from human contact, it can also -- in many cases -- be used to reduce endogenous contamination.

Despite the most stringent use of sterile techniques, the contamination of plant cell and plant tissue cultures remain a persistent problem that can result in losses ranging from small number of cultures to the loss of whole batches.


  • 5

    Posted by James on 11th Nov 2020

    So just to test the ability of the PPM to resist microbial contaminants - I dosed two plates of media, one with and one without, with several drops of actively aerated compost tea. In 7 days the plate without PPM was entirely overrun with fungi and bacteria - the plate with PPM has had zero visible growth at 1ml/l. Every culture I have placed in PPM media - has had no problems with unwanted contamination. Some magic stuff here.

  • 5

    Posted by Tyler on 27th Jul 2020

    I am very grateful to have found PPM. In the past I was averaging a 70% contamination rate. Since using PPM I'm holding steady at a 5% contamination rate.

  • 5
    Works Perfectly!

    Posted by Kenneth Pilcher on 21st Jul 2020

    I'm new to micropropagation. I was concerned about contaminated cultures. I've use PPM in the first several media batches and all have been contamination-free. For me, PPM is a required ingredient in a media formulation.

  • 5
    Makes a difference in home culture lab

    Posted by Brad Ayres on 30th Jun 2020

    I am a beginner hobbyist in tissue culture, still experimenting to get reliable results. There is a notable improvement in contamination rates when using PPM. I recommend it and will continue to use it in my culture medium.

  • 5

    Posted by Tian Wang on 22nd Jun 2020

    Had fungal growth in my latest batch of water-germinated VFT seeds. After rinsing the seeds w/0.5% bleach and then plating it into MS+PPM, they germinated without any contaminants. PPM works.

  • 5

    Posted by andrew koehler on 21st Jun 2020

    Talk about making tissue culture a breeze!!! I haven't had any contamination problem since I started using ppm! Good prices and fast shipping! Keep up the awesome work!

  • 5
    PPM is an integral part of my business

    Posted by David on 20th Jun 2020

    We use PPM everyday in our business’s tissue culture division. A high throughput approach is capped off by PPM cementing the successes and helping convert them to profit. Thanks.

  • 5
    Fast and Easy

    Posted by Taylor on 20th Jun 2020

    Quick shipping and amazing customer service as well as competitive pricing. Highly recommended to anyone looking to reduce the contamination possibilities. Opened up my package and they even tossed in a free shirt, only thing I wish is that it would have been a little bigger size so I could rep it out and about.

  • 5
    First time user

    Posted by Taylor on 20th Jun 2020

    Have used another companies ppm and excited to try out this one from other reviews. Got to me super quick and was securely shipped with no damage.