Oregon State University

Blend and Mixture Verification

Some customers mix or blend many species and want to know if the product has the specified percentages of components or if a certain component has acceptable viability. Useful for producers and users of blends and mixtures.

Examples of recent tests include:

  • Samples of a mixture for wetlands were submitted for identification of seed species present. Component species were identified, weighed and reported.
  • A buyer had purchased a blend of turf grass and wanted to verify if the sample contained the kinds and proportions listed in the label.
  • Plants were sent for grow-out and identification of plants from a golf course (live plants were sent in for us to grow and identify).
  • Examined seeds used in a new planting process to test for viability of seeds after processing. The seed mixture was sprayed through a hose at high speed and the customer had it checked for damage to the seeds.
Testing fees are based on hourly charges. 

Contact Info

The OSU Seed Laboratory is an AOSA and ISTA member lab and is ISTA Accredited Laboratory US07.

3291 SW Campus Way
Corvallis, OR 97331
Phone: 541-737-4464
Fax: 541-737-2126

Hours: 8-5 Mon - Fri
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