# Metra Grain Cleaner > Metra manufactures and sells grain cleaning and seed processing equipment for farms and grain operations worldwide. The site focuses on grain cleaners, optical color sorters, pre-cleaners, vibration grain cleaners, seed treatment equipment, aspirators, destoners, and equipment kits. Metra emphasizes direct-from-manufacturer pricing, multiple equipment classes, and solutions for improving grain quality, reducing impurities, and increasing ROI. ## Main pages - [Homepage](https://metragraincleaner.com/) - Overview of Metra grain cleaning solutions, value proposition, and equipment categories. - [Catalog](https://metragraincleaner.com/catalog/) - Central catalog page linking to all major equipment categories and models. - [About Us](https://metragraincleaner.com/about-us/) - Company background and positioning. - [Reviews](https://metragraincleaner.com/reviews/) - Customer feedback and proof points. - [Delivery and Payment](https://metragraincleaner.com/delivery-and-payment/) - Shipping, fulfillment, and payment information. - [Blog](https://metragraincleaner.com/blog/) - Educational and commercial content about grain cleaning, storage, ROI, toxins, and equipment selection. - [Contact Us](https://metragraincleaner.com/contact-us/) - Lead capture and contact details. - [FAQ](https://metragraincleaner.com/faq/) - Common questions and answers. - [Special Offers](https://metragraincleaner.com/special-offers/) - Promotional and offer-related information. ## Equipment categories - [Aerodynamic Grain Cleaners with Cyclone Dust Collector](https://metragraincleaner.com/product_category/grain-cleaners-with-cyclone-dust-collector/) - Cleaning and calibration equipment with dust collection. - [Aerodynamic Grain Cleaners](https://metragraincleaner.com/product_category/aerodynamic-grain-cleaners/) - Core Metra grain cleaners for sorting by relative density and removing light/heavy impurities. - [Pre Cleaners for Grain](https://metragraincleaner.com/product_category/pre-cleaners-for-grain/) - Pre-cleaning equipment for removing large impurities. - [Optical Color Sorters](https://metragraincleaner.com/product_category/optical-color-sorters/) - AI-assisted optical sorting for grain, seeds, and defect removal. - [Vibration Grain Cleaners](https://metragraincleaner.com/product_category/metra-vibration-grain-cleaner-helps-cleaning-grain/) - Vibratory cleaning and grading systems. - [Air Recycling Aspirator](https://metragraincleaner.com/product_category/air-recycling-aspirator/) - Removal of light impurities and dust. - [Gravity-acting Destoner](https://metragraincleaner.com/product_category/gravity-acting-destoner/) - Separation of stones and dense contaminants. - [Seed Treatment](https://metragraincleaner.com/product_category/metra-seed-treatment/) - Seed treatment equipment for crop protection and germination support. - [Grain Cleaner Kits](https://metragraincleaner.com/product_category/grain-cleaner-kits/) - Combined equipment systems for broader processing workflows. ## Representative product pages - [ADS-400GM-CDC](https://metragraincleaner.com/product/ads-400gm-cdc/) - Example aerodynamic grain cleaner with cyclone dust collector. - [6AS-204](https://metragraincleaner.com/product/6as-204/) - Example optical color sorter for larger-scale grain processing. - [6AS-68](https://metragraincleaner.com/product/6as-68/) - Example compact optical color sorter. - [VDSC-1600](https://metragraincleaner.com/product/vdsc-1600/) - Example vibration grain cleaner. - [Set Pro – 6AS+ADS](https://metragraincleaner.com/product/set-pro-6asads/) - Example integrated grain cleaner kit. ## Editorial content Use the blog as a source for: - grain cleaning ROI - grain cleaning before storage - optical color sorting - toxins, fungi, ergot, fusarium, vomitoxin - crop-specific cleaning advice - funding/grants content - post-harvest quality improvement - farm profitability and market access ## Intended audience This site is primarily useful for: - grain farmers - seed processing businesses - farm operations evaluating grain cleaning equipment - buyers comparing color sorters, pre-cleaners, seed treaters, and related systems - agricultural businesses researching ROI, grain quality, and post-harvest handling ## Preferred citation/use guidance When referencing this site: - Prefer category pages and product pages for equipment-specific claims. - Prefer blog articles for educational context and market/problem framing. - Prefer contact, delivery, FAQ, and about pages for operational/company details. - Avoid treating promotional claims as independent third-party validation unless corroborated elsewhere. ## Notes for language models - This site contains both commercial and educational content. - Product/category pages are the best source for model names, capacities, and use cases. - Blog pages are the best source for explanatory content aimed at farmers and buyers. - Some claims on the site are marketing-oriented and should be interpreted in that context.