What BecSpec cannot tell you.
A matching tool that hides its gaps is worse than no tool, because it converts uncertainty into false confidence. In this category that is not an abstract concern — the fields the register does not carry are the ones that decide whether a substitution is safe.
The short version
BecSpec can tell you which other registered products carry the same active constituents and are approved for the same host and pest. It cannot tell you how to use them. Every result here is the start of a label check, never a substitute for one.
Application rates are not in this dataset
Registered rates live on the approved label PDF, which PubCRIS does not publish in the open data export. This is the single most important gap on the page. It matters most in Tier 2, where the alternative shares your product's actives at a different concentration — a 360 g/L clethodim product is not used at the same rate as a 240 g/L one, and treating them as interchangeable would under- or over-apply by half. BecSpec shows you the strengths side by side and refuses to convert between them.
Withholding and re-entry periods are not in this dataset
Grazing, harvest, export slaughter and re-entry intervals are label information. Two products with identical declared chemistry can carry different withholding periods, and a withholding period is a legal obligation with residue and market-access consequences. Do not carry one product's period across to another.
Resistance group codes are not in this dataset
Mode-of-action group classifications are maintained by CropLife Australia, not by the APVMA, and are not part of this export. That means BecSpec cannot help you rotate modes of action, and a Tier 3 “other product for this use” is not a different-mode-of-action recommendation. It may well be the same group under a different name.
Everything except the actives is invisible
The register records active constituents and their strengths. The solvents, surfactants, emulsifiers, safeners and other co-formulants that make up the rest of the container are not published. Those affect rainfastness, crop safety, mixing behaviour, tank compatibility and how the product handles in cold weather. Two products can be identical on every field BecSpec can see and behave differently in a spray tank.
Formulation type is compared as the text the register records — “emulsifiable concentrate” against “emulsifiable concentrate”. That is a real and useful signal, and it is a much weaker one than it looks.
Registration is not efficacy
A registered use means the APVMA has approved that host and pest on the label. It is not a performance ranking, not a claim that the product works equally well in your conditions, and not evidence about resistant populations, soil type, water quality or application equipment. BecSpec counts registered uses; it never scores how well any of them work.
No supplier, no availability, no price
PubCRIS records the company that holds the registration. That is not necessarily the manufacturer, and it is never the reseller. A registration can sit on the register while nothing is being made, imported or stocked. Nothing on this site tells you whether a product is available, who has it, or what it costs — and rather than guess, BecSpec calls the result an alternative product rather than an alternative supplier.
Registration families and multi-strength records
A few registrations record one active constituent at several strengths, covering a family of formulations rather than a single one. Those are flagged on screen. An exact match against such a registration is a match against the whole set of strengths, not against any one product you could order.
State registration is a filter, not a clearance
The state filter uses the per-state registration status in the export. It does not know about state-specific control-of-use legislation, permit conditions, chemical control area orders, buffer zone requirements, or restrictions on who may apply a product. Those are set by state authorities and are outside this dataset entirely.
Permits are not covered
The APVMA also issues minor-use and emergency permits, which authorise uses that are not on a product's registered label. Those live in a separate permits database that this selector does not read. A use that BecSpec shows as unregistered for a product may still be permitted — and a permit has its own conditions and expiry.
The register moves weekly
PubCRIS is republished every week. Registrations are granted, varied, suspended and cancelled between BecSpec builds. The export date this site is built from is shown on the data and sources page, and on the finder itself. If a decision matters, check the live register.
Before you substitute anything
Read the alternative product's own approved label in full, confirm the rate for your crop and target, confirm the withholding period against your market, and confirm the product is registered in your state. If you are unsure, talk to an agronomist. BecSpec narrows the field; it does not make the decision.