- Swiss testing laboratory
ASTM - G 29
Determination of Algal Resistance of Plastic Films
Hassle-free testing experience
Need to get a product tested? No worries! To and fro logistics are on us; we collect your products, test them and, deliver them back to you.
Related tests for you
Quick understanding about test
ASTM - G 29 - Determination of Algal Resistance of Plastic Films
- Blue-green algae Oscillatoria sp.
- Cyanobacteria are propagated under fluorescent lighting in a propagation tank.
- Treated and untreated samples are suspended in jars containing homogenized cyanobacteria.
- Jars are incubated alternately in darkness and light for 12 hours over 14 days, with reinoculation every 3–4 days.
- After incubation, samples are visually inspected for algae growth.
- Provides a feasible economical method to evaluate algal resistance.
- Ensures product performance against algal degradation in outdoor environments.
Do you have a product that needs testing?
Abstract
Organisms typically used in this method
Blue-green algae Oscillatoria sp. (cyanobacteria)
ASTM G29 Test Method
Propagation tank – In the test method, the propagation tank is used to provide the optimal conditions for the growth of cyanobacteria (test inoculum). Cyanobacteria are propagated on both treated and untreated polymeric mesh screens under fluorescent lighting.
- Treated and untreated samples are suspended in jars containing homogenized cyanobacteria.
- Jars are further kept for incubation in both darkness and light for 12 hrs.
- Every 3 – 4 days jars are reinoculated with homogenized cyanobacteria.
- After the completion of 14 days of the test, test samples (both treated and untreated) are separated and evaluated for fungal growth.
Major advantages of ASTM - G 29
ASTM – G 29 is a simple and cost-effective test method for the determination of algal resistance of plastic films. This test procedure typically takes 14 days and the results of the test can be easily evaluated by visual inspection.
Microbe investigations is a microbiology testing laboratory, run by research professionals and technical experts. Our experts are highly skilled in conducting microbiological analysis on product samples meanwhile following strict safety procedures to avoid contamination.
For more information on antifungal testing of plastic films and our other testing services, get a free consultation from our expert today.
Frequently Asked Questions
DR. Martinoz Scholtz
ASTM G29 test method determines the efficacy of plastic films integrated with anti – algae additives to resist the growth of surface-growing algae
ASTM G29 test is applicable for polymeric films used in man-made water structure environments such as swimming pools, irrigation ditches, water storage tanks, and artificial ponds.
ASTM G29 testing duration is 14 days to 30 days (incubation time of test materials after inoculation) based on the type of sample and material tested.
At Microbe Investigations, we test for the ASTM G29 using the Blue-green algae Oscillatoria sp.
Meet the best of the blend of
R&D, Efficacy Testing,
Innovation and Passionate
Experts at MIS.
Explore More
Microscopic spores of fungi and
Face masks coated with antibacterial
Introduction The Japanese Industrial Standards
What is ISO 18184 Testing?
