Programs of the Agricultural Commissioner

Agricultural Product Quality

Nursery Licenses

Produce Inspection



Direct Marketing & Organics

Organic Info

Mo. Co. Certified Organics

Farmers Markets


Pesticide Use & Enforcement

Restricted Material Permits

Private Applicator Certificates

Worker Safety

File a Complaint


Pest & Disease Prevention

Phytosanitary Certificates





Invasive Weeds

Weed Threats

Weed Resources


Weights & Measures

Consumer Protection

Device Registration

Public Scales

Weighmaster / Public Scales

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A weighmaster is an individual or company who weighs, measures, or counts a product and issues a statement or memorandum of the weight, measure, or count which is used as the basis for either the purchase or sale of that product or charge for service. Weighmasters or their deputy weighmasters perform the weighing, measuring, or counting and issue the weighmaster certificate for the company.

In concert with state officials, county inspectors monitor licensed weighmasters by auditing records kept by local businesses. Program activities include reweighing of vehicles and containers to verify the net weight statements on weighmaster certificates, spot inspections of establishments involved in bulk sales through the use of undercover sales or purchases of commodities, and investigations of complaints alleging fraudulent use or misuse of weighmaster certificates.

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