Grain Test Sieves manufactured in accordance with applicable national and international standards are a key component of worldwide grain and cereal trade to provide a reliable means of quality classification in grain quantities of any size. The Blau-Metall sieve portfolio builds on nearly 30 years of experience in the production of robust and highly-precise grain sieves across international ISO standards, European standards, the U.S. Code of Federal Regulations / Department of Agriculture requirements and a variety of national requirements to provide our customers with a complete solution for all grain sieving tasks across all markets.
Grain analysis using laboratory test sieves has become the obligatory classification method for the quality of grain in the majority of grain-producing nations and is also required by Government Intervention Boards. Blau-Metall offers all sieve sizes included in the major national and international standards such as ISO 5223 as well as sieving accessories to deliver an integrated solution for all standard grain sieving requirements. Additionally, Blau-Metall offers non-standard and custom-made sieves for specialty sieving needs that may arise from new developments in crop production and processing.
Blau-Metall test sieves stand out for their particularly robust design and their high precision perforated plate achieved through a production process perfected over nearly three decades and a rigorous quality control program that includes multiple stages of optical measurements on each and every sieve we deliver. The sieves consist of high-stability stainless steel frames with smooth upper edges for easy handling and precision-aperture perforated plates made from corrosion-resistant stainless steel, both joined by a stainless-steel tensioning ring and a pair of robust solder joints that form a complete seal that will stay in place over an extended period.
Blau-Metall grain test sieves are compatible with quality sieves of other sieve manufacturers and can be used on sieve shakers and sieve machines of all major suppliers. Given their light weight and handy dimensions, the sieves are also ideally suited for on-site analysis and hand-sieving of grain samples. Our construction methodology with ease of use in mind enables a simple cleaning process for our sieves. With their fully sealed and corrosion- & temperature-resistant design, Blau-Metall sieves can deliver reliable and repeatable sieving results over a period of many years – a stark contrast to comparable sieves with aluminum or galvanized steel components.
Through a fully transparent quality control process using modern digital measurement technology, we can guarantee an outstanding quality of our Blau-Metall grain sieves and full compliance with the tolerances specified in the applicable national or international standard such as ISO 5223, ISO 3310-2, ASTM E323 and their national equivalents. A tamper-proof laser engraving on every sieve allows for full-traceability through every sieve’s unique serial number. Prior to delivery, each and every sieve undergoes optical inspection and is shipped with a Certificate of Compliance with the Standard (EN 10204 2.1). All test records are stored by Blau-Metall for later reference.
Additionally, every grain sieve sold through the Grain Sieve eStore includes the complete inspection record in the form of a Certificate of Inspection 3.1 (EN 10204) that transparently displays all relevant sieve parameters.
| DIAMETER | APERTURE TYPE | APERTURE SIZE | APPLICATION | PRODUCT DETAILS |
|---|---|---|---|---|
| 200 mm | Oblong | 1.00 x 20.0 mm | Fines, Besatz | Product Details |
| 200 mm | Oblong | 1.50 x 20.0 mm | Rice | Product Details |
| 200 mm | Oblong | 1.60 x 20.0 mm | Rice | Product Details |
| 200 mm | Oblong | 1.70 x 20.0 mm | Rye, Wheat | Product Details |
| 200 mm | Oblong | 1.80 x 20.0 mm | Rye, Oats | Product Details |
| 200 mm | Oblong | 1.90 x 20.0 mm | Durum Wheat, Triticale | Product Details |
| 200 mm | Oblong | 2.00 x 20.0 mm | Common Wheat | Product Details |
| 200 mm | Oblong | 2.20 x 20.0 mm | Feed Barley, Malting Barley | Product Details |
| 200 mm | Oblong | 2.25 x 20.0 mm | Intl. Alternative Size | Product Details |
| 200 mm | Oblong | 2.50 x 20.0 mm | Malting Barley | Product Details |
| 200 mm | Oblong | 2.80 x 20.0 mm | Malting Barley | Product Details |
| 200 mm | Oblong | 3.50 x 20.0 mm | Seeds | Product Details |
| 200 mm | Oblong | 3.55 x 20.0 mm | Besatz | Product Details |
| 200 mm | Round | 1.40 mm | Besatz | Product Details |
| 200 mm | Round | 1.80 mm | Sorghum, Flax | Product Details |
| 200 mm | Round | 4.50 mm | Corn / Maize | Product Details |
Compliance
Blau-Metall manufactures test sieves using only compliant materials, production methods and places emphasis on the strict quality control requirements made by all applicable standards for test sieves and laboratory instruments. Components not manufactured in-house are exclusively procured in Germany, providing true justification for the label “Made in Germany.” Every test sieve undergoes optical inspection using the instruments and methods specified in EN ISO 5223 and comparable standards to confirm compliance which is documented according to EN 10204 and made available to the customer. Additionally, Blau-Metall keeps in its own records inspection documents for every sieve we ship so that full traceability is possible if requested by our customers.
As a specialty service, Blau-Metall can provide additional documentation upon customer-request, such as measurements of every single aperture of a sieve.
Certification, Re-Certification & Documentation
Sieves for grain classification fall into the greater category of laboratory test sieves which are classified as measurement instruments and, depending on national and international regulations, have to be inspected by their manufacturer prior to shipment. Blau-Metall complies with these regulations as every single sieve we deliver has undergone optical inspection according to the standard with which the sieve complies.
Operators of test sieves are also obligated to re-certify sieves at regular intervals if they are being used as measurement instruments under applicable statutory regulations. Grain sieves in particular are often placed under special regulations with regard to the frequency of re-calibration, e.g., for grain intervention in the European Union.
Blau-Metall offers cost-efficient re-certification services with fast turnarounds and complete documentation made available to the customer.
Inspection Documents According to EN 10204
For every Blau-Metall test sieve, we issue a free Certificate of Compliance 2.1 to attest that the sieve was manufactured according to the specified standard or tolerances and has passed optical inspections as required by the respective standard. Additionally, a Test Sieve Record Card is issued for every Blau-Metall sieve to keep track of inspections carried out for that specific sieve. Purchases of ISO 5223 or ISO 3310 test sieves through our eStore also come with an Inspection Certificate 3.1 - an added value of € 30.00.
Certificate of Inspection 3.1 / Certificate of Calibration 3.1
To bolster full confidence in the quality of Blau-Metall grain sieves, each sieve sold via our Grain Sieve eStore is delivered with an Inspection Certificate that includes all results obtained during optical inspection of the sieve. Optionally, the inspection process can be carried out as a calibration in which at least three times as many apertures are measured than are required for the conventional certification according to ISO 3310 / EN ISO 5223 or their ASTM equivalents.
Inspection results for each sieve we deliver are saved in our records for at least one year so that Inspection Certificates can be ordered by our customers after the fact, should they be required.