Welcome to Yantai Dasteck Chemicals Co., Ltd. English/中文/Tiếng Việt
Home > FAQ > Can you provide free samples and technical support for a mill trial?

Can you provide free samples and technical support for a mill trial?

Direct Answer

Direct Answer Samples of formamidinesulfinic acid (FAS) and technical support are both available, on the following basis.

Samples

  • New customers: a standard free sample of 200 g
  • Existing customers and large accounts: agreed case by case
  • New customers with a genuine need for larger quantities: the sample charge and freight can be reduced depending on the circumstances

Form of technical support

  • The standard route is remote guidance, covering trial protocol design, data interpretation and advice on adjusting parameters
  • Where a genuine technical problem cannot be resolved remotely, a site visit by technical staff can be arranged after internal assessment

What remote support covers

  • A trial protocol template: reference sample, dose gradient, pH gradient and temperature-time matrix
  • Advice on measurements: ISO brightness, brightness gain, colour coordinates a* and b*, ERIC, dirt count, pulp strength and chemical cost
  • Interpretation of the data and recommendations for the next round of trials

What you need to prepare in advance

  • At least two representative furnishes, ideally including one that is more difficult to bleach
  • Reference data from the current process for side-by-side comparison

Bottom line

Samples follow the standard policy of a free 200 g sample for new customers. Technical support is primarily remote, and a site visit can be arranged after assessment where the problem genuinely cannot be solved remotely.

Need a sample, COA, SDS or technical support? Contact Dasteck.