Multi-Slot Seed Bag Trier

What is the Multi-Slot Seed Bag Trier?

A hollow probe with several slots that withdraws a full-depth core from a sack in one movement. It is the right choice for sampling seed in bags and small containers for certification and intake testing.

Overview

The multi-slot bag trier is a hollow metal tube with several slots along its length and a pointed or rounded tip, fitted with a rotating sleeve or a shutter that closes the openings. The trier is pushed into the bag, rotated to align the slots and then withdrawn, so that seed from several depths is captured in one operation, which is faster and more consistent than a single-slot trier. Lengths from about 400 to 1000 millimetres suit different bag sizes, and the slot pattern is chosen so the sample covers the full bag profile. After withdrawal, the trier is emptied into the composite container and cleaned. Because bag sampling is repetitive, the tool must be smooth and durable, usually stainless steel or brass, and easy to clean so that treated seed and dust do not carry over between lots.

How does it work?

Representative sampling depends on taking many small increments from different positions in the lot and combining them into a composite, then reducing it without changing composition. Bag triers are pushed into sacks and withdraw a core that includes material from several depths, while multi-slot versions take a column at once. For bulk lots, a probe or pneumatic sampler withdraws grain from several points and depths, and automatic in-line samplers divert a measured portion of a flowing stream at intervals so that the whole throughput is represented. Composite samples are then reduced with a divider. A Boerner-type divider spreads material over a rotating cone so it falls evenly into a ring of containers, while a riffle divider passes it through alternating chutes. Both avoid the segregation that occurs when a scoop is taken from a pile.

What are the key features?

• Multiple slots capture a full-depth core in one movement.
• Rotating sleeve closes slots during insertion and withdrawal.
• Lengths from 400 to 1000 mm suit different bag sizes.
• Smooth stainless or brass finish resists wear and cleans easily.
• Pointed tip penetrates woven and paper sacks.
• Consistent technique improves sample representativeness.

What are the technical specifications?

A typical multi-slot seed bag trier configuration offers trier type of Multi-slot, rotating sleeve, length of 400–1000 mm, diameter of 15–30 mm, number of slots of 3–8 along length, material of Stainless steel or brass and core volume of 20–100 mL per insertion. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Multi-Slot Seed Bag Trier is used in bagged seed certification sampling, seed lot intake inspection, treated seed sampling and retained sample collection. Across the wider Seed Sampling Equipment class, laboratories also deploy it for seed certification sampling, seed lot intake inspection and laboratory submitted sample preparation.

Which standards and certifications apply?

Relevant standards and methods include ISTA Rules Chapter 2 (sampling), ISO 24333 (cereals sampling), ISO 6644 (automatic sampling), GB/T 3543.2 (seed sampling) and AOSA Rules for Testing Seeds (sampling). Certification candidates for this model are CE and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Take increments from the required number of positions and depths so that the composite is representative, and record the lot identity, number of increments and sampling date. Keep samplers clean and dry between lots, because a few seeds left in a trier or chute can contaminate the next sample, especially after seed treatment. Avoid sampling in rain or extreme humidity where seed moisture can change, and seal samples in moisture-proof containers immediately. Handle dividers so that all passages are full and free-flowing, and do not overload them. Submit the required mass, and retain a duplicate sample where the scheme requires it. Calibrate balance and weighing equipment used for sample mass, and train staff in the specific trier and divider technique so that results are reproducible between operators.

How do I select the right Multi-Slot Seed Bag Trier?

Select the multi-slot trier when sampling many bags quickly and consistently is required and the rule permits a full-depth core. For deep bulk lots, use a probe or pneumatic sampler instead. In an RFQ, specify trier length, diameter and material to suit the bag type and species.

How does it compare with other Seed Sampling Equipment variants?

Match the sampler to the container or stream and to the rule that applies. Bagged seed needs a trier of the right length and slot pattern so that a core from top to bottom is withdrawn; multi-slot triers are faster for large numbers of bags. Bulk lots, bins and trucks need a probe or pneumatic sampler that reaches several depths, and large silos or continuous flows are best served by an automatic in-line sampler that takes timed increments. After sampling, a divider is essential to reduce the composite; choose a Boerner type for free-flowing seed and a riffle type for smaller or more difficult material. Confirm that the sampler and divider meet the sampling scheme required by the certification or testing rules, and that they can be cleaned between lots to avoid variety and seed treatment contamination.