Approved sample tagged for a later production lot — After approval: the same axes are written so a later batch can be compared.

greenhouse polycarbonate panels

Set sample, approval and acceptance language before a production lot ships. Polycarbonate Panels Sourcing does not keep a private grade book. The buyer's record is what later batches are compared against.

Sample completeness check — not an energy or discount calculator

Use this list to see whether a greenhouse polycarbonate panels sample is ready for approval. It does not compute a saving, an R-value or a lowest price.

Thickness in inches or millimetres written on the sample tag Wall count matches the request (twin-wall versus multi-wall) UV-side marking agrees with the outdoor face Color/finish compared in the same light as the production lot will see Named ASTM method, if used, cited with the test condition Density in g/cc recorded only if it is how you distinguish grade

A checked list is a buyer record. It is not a certificate issued by this desk.

What has to be agreed as an acceptance condition

Color / finish

Clear, bronze, opal or colored must be named. A verbal "close to last year" is not an acceptance condition. Keep the approved chip or offcut with the lot number the factory used.

ASTM or equivalent method

If impact, light transmission or color is an acceptance point, the report should cite the method and the condition. A plant ISO 9001 file does not stand in for that page.

What is recorded for the next batch

Full description as it will appear on the invoice; inquiry form; thickness; wall count; UV side; color; quantity; documents; packing; origin; Incoterms; and the date the factory said it can ship.

Send the sample brief

Say whether the sample must be approved before the production lot. Missing fields stay visible.

Name (required)

Work email (required)

Company

Phone

Procurement requirement (required)

Write thickness, solid versus multiwall, sheet size, color/finish and any ASTM method; quantity with unit; destination state or postal code and requested delivery / lead time; required product documents and sample needs. Optional target budget with currency and unit or whole-order basis; optional supplier preference. Drawings can be sent after we reply; this form has no upload field.

JavaScript is off. Write any target budget (amount or range, currency, per unit or whole order) and supplier preference (premium, mid-range, budget-friendly, or not sure) directly in the requirement field. No existing quotation is required.