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This article explains how a chemical formulator can move to a higher ChemCheck plan during an active subscription so the organisation can publish more products. It also explains how the upgrade price is calculated.

01/ Introduction

Your ChemCheck plan sets how many products your organisation can publish at once. If you need to publish more products than your plan allows, you can move to a higher plan during your subscription. The ZDHC Gateway has no Upgrade button: ZDHC Customer Support changes your plan for you. You pay only for the time that is left in your current subscription, and your subscription end date stays the same.

02/ ChemCheck plans

Plan Products you can publish at the same time Price per 12 months (excl. VAT)
1 to 99 products 1 to 99 €1,750
100 to 399 products 100 to 399 €3,950
400 to 999 products 400 to 999 €6,900
1000+ products 1,000 or more €9,800

03/ Prerequisites

  • You must be an admin in your organisation to request and pay for an upgrade.
  • Your organisation has an active ChemCheck subscription. If you don't have an active subscription, buy a new one instead. See: How do I pay for a ZDHC Gateway subscription?

04/ Steps

Part 1: Check your current plan

  1. Click ChemCheck in the main menu.
  2. Click ChemCheck Settings in the left menu.
  3. Open the Manage Subscription tab. The Subscription Overview shows how many products you have published, your current plan, how many products your plan allows, and the start and end dates.
  4. Choose the plan you need, using the table in the Overview above.

Part 2: Ask for the upgrade

  1. Admin only: contact ZDHC Customer Support and ask to upgrade your ChemCheck plan. You can find the Contact ZDHC Customer Support link on your dashboard. Include:

    • your organisation name and Organisation ID (shown at the top of your dashboard)

    • your current plan

    • the plan you want to move to

Part 3: Pay and check your new limit

  1. Open Organisation Profile from the profile menu in the top-right corner.
  2. Click Subscriptions in the left menu.
  3. Click View on your ChemCheck subscription. The Subscription Details panel opens.

    Screenshot 2026-11-10 at 14.54.38.png
  4. Click View Invoice on the upgrade invoice.
  5. Admin only: pay the upgrade invoice by bank transfer, or click Pay Invoice Online on the invoice to pay by card.
  6. Go back to ChemCheck Settings > Manage Subscription and check Published Products Allowed. The number shows your new limit after ZDHC Customer Support has changed your plan.

05/ How the upgrade price is calculated

The upgrade price is pro rata. You pay the difference between your current plan and the new plan only for the time left in your current subscription. We count the remaining time to the second, so the amount depends on the exact moment of the upgrade.

For example: you are three months into a 12-month subscription on the 1 to 99 products plan, and you move to the 100 to 399 products plan. You pay the price difference between the two plans for the remaining nine months.

06/ Tips & Notes

Tips:

  • Plan your upgrade in advance: Request an upgrade before reaching your publishing limit. Once you reach the limit, you cannot publish additional products until you upgrade your subscription or unpublish existing products.
  • Upgrading a subscription purchased with a ZDHC voucher: If your current subscription was purchased using a ZDHC voucher that covered the full subscription cost, for example, as a Signatory chemical formulator, you can upgrade to a higher plan without an additional payment. Mention the voucher when contacting ZDHC Customer Support.

Notes:

  • Subscription end date: Upgrading your ChemCheck plan does not change your subscription end date. The higher publishing limit applies for the remainder of your current subscription period.
  • Downgrading your subscription: You cannot move to a lower plan during an active subscription. You can select a lower plan for your next subscription period.
  • Selecting the wrong plan: If you selected the wrong plan when purchasing your subscription, contact ZDHC Customer Support before paying the invoice.
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