Raw Materials Index

From 1 May 2026 a raw materials and energy surcharge will be shown on invoices. This surcharge is temporary and provisionally limited until 31 March 2027.

Download Raw Materials Index (RI)

You can view the images in full size via the download link.

Updated 26.10.2026

Brand

Group

Surcharge for the month of November

ROXOR

90 ROXOR conventional raw materials and energy surcharge
Item no. TEMPRE90

CHF 1.08/kg

ROXOR

91 ROXOR Bio raw materials and energy surcharge
Item no. TEMPRE91

CHF 0.38/kg

AMSTUTZ
ROXOR
polyston

13 Raw materials and energy surcharge Cleaners & Antifreeze
Item no. TEMPRE13

CHF 0.25/kg

Petrofer

15 Petrofer raw materials and energy surcharge
Item no. TEMPRE15

CHF 1.09/kg

We have classified each of our products into these groups because the raw materials behave differently in these areas. The temporary surcharges are listed separately and transparently on the invoice, in the same way as VAT.

Table showing raw material indices (RI) from Laemmle Oil and Chemicals: monthly index and cent values for RI 90/91 ROXOR conventional/bio, RI 13 Cleaners & Antifreeze, RI 15 PETROFER (March 2026–March 2027), including notes.

Line chart: Raw Materials Index (RI) March–Nov 2026 for four materials, starting at 100 (March). RI 90 (red) and RI 15 (blue) rise sharply, esp. from May. RI 91 (green) and RI 13 (yellow) rise more moderately; RI 91 levels off.

The following example relates to the month of May.

Table showing raw material and energy surcharges for AMSTUTZ, Petrofer, ROXOR (conventional) and ROXOR Bio. Includes item number, quantity, unit price and total amount of extra costs based on net weight of products.

The amount of the surcharge is determined using the RI (Raw Materials Index). For each item, we calculate the raw materials deviation and then work out the average per group. This average becomes the index. If, for example, the index for organic products ‘91 Raw Material and Energy Surcharge ROXOR Bio’ rises from 100 to 107, this results in a surcharge of 7 rappen per kilogram. Only the actual fluctuations in raw material and energy costs are taken into account; no other imputed additional costs are included in the calculation.

The RI (Raw Materials Index) is calculated monthly and set on the 1st of each month for the following month. The most recent calculation for March 2026 serves as the base index of 100.

The index is valid from the 1st to the end of each month (e.g. the May index is valid from 1 May to 31 May).
The index is recalculated every month
The index is published on this website on the 25th of each month
The order date is decisive

We publish the index and the chart via this link so that you can view the latest calculations at any time: laemmle-chemicals.ch/RI or via the navigation menu: laemmle-chemicals.ch -> Raw Materials Index (RI).

We will update this page monthly, around the 25th, and present the history transparently. We thank you for your trust and hope to be able to dispense with this surcharge soon.

Download Raw Materials Index (RI)