Light Microscopy - Cellulose

Purpose

Microscopy images are crucial for making decisions regarding further actions based on a clearer understanding of the product’s properties and condition.

The use of light microscopy and other techniques to analyse fibre composition, fibre identification, damage, and structural characteristics. Research on vessel cells, cross-sectional studies in the z-direction, as well as the distribution of starch, optical brightening agents (OBA), and printing ink in cellulose. Investigations also include the analysis of deposits on materials, such as tape removal tests and localisation studies, to understand the material’s properties and quality control.

Cellulose and fibre-related processes: Analysis of magnesium hydroxide (MgOH₂), calcium carbonate (CaCO₃), stone cells, spots, and specks. Studies on coating and printing ink on cellulose, as well as the examination of bark and microorganisms (bacteria). Focus on size measurements, such as fibre wall thickness, surface layer, and coating thickness, using light microscopy and other microscopic techniques.

Surfaces and print quality: Focus on the analysis of surface fibres, fibre raising, visible contaminants through the coating layer, defects in laminated surfaces, print surfaces, and creases. These investigations aim to improve material handling, manufacturing, and the final product's quality across various industries.

Method

Technical Information on Light Microscopy:

Light microscopes are essential tools for studying materials and biological samples at the microscopic level. Here is a summary of the key technical features:

1. Transmitted light:
  - Bright Field (BF): Standard method where objects are visible against a bright background.
  - Dark Field (DF): Light is scattered by the object, making it visible against a dark background.
  - Polarised light: Used to analyse optical properties, such as crystal structures.
  - DIC (Differential Interference Contrast): Provides three-dimensional, high-contrast images using light interference.
  - Phase contrast: Enhances contrast for transparent objects without the need for staining.

2. Reflected light: Light is directed at the object from the side, used for surface studies.
  - BF and DF: Similar to transmitted light, but with light from a different angle.
  - Polarised light and DIC: Can also be applied here.

3. UV light (Fluorescence microscopy): Visualises fluorescent materials to identify specific substances or structures.

Light microscopes can magnify up to 1000 times and have a resolution limit of 0.2 micrometres.

Expertise:

With our expertise in microscopy and extensive experience in pulp technology, we are well-equipped to perform a range of analyses and studies related to pulp, paper, cardboard, and other related materials. We always strive to deliver high-quality results and customized solutions that meet our clients' specific needs and contribute to their success in the market.

Deliveries

We tailor our result delivery according to your order, taking into account its scope and any complexity involved. This way, we can ensure that you receive your results on time and that they meet your expectations.

RISE offers a report that includes data in Excel format along with relevant images and diagrams. It is meticulously compiled using standard methods for the conducted analyses. The report also includes an assessment of measurement uncertainty to ensure the reliability of the presented results. All relevant parameters pertinent to the specific analysis are included to provide a comprehensive picture of the situation. Additionally, detailed comments and explanations are provided to offer further insight and understanding of the presented data.

RISE strives to ensure the highest possible quality and reliability in the presented results, which in turn assists customers and stakeholders in making informed decisions based on the provided information.

When it comes to the samples you send to us for analysis, your peace of mind is our priority. Unless otherwise agreed, we retain the samples for a period of four weeks after the analysis has been conducted. This way, we can ensure that you have ample time to review the results and make any further inquiries or actions if necessary. We always aim to provide the best service possible.