Kappa number, density, and strength parameters in wood pulp Fast and straightforward determination by near-infrared spectroscopy



Near-infrared spectroscopy for routine analysis of wood pulp

02

Metrohm offers a turnkey solution for routine analysis of various important quality parameters in wood pulp by near-infrared spectroscopy (NIRS). Based on a dedicated spectral database and a pre-calibration model, this turnkey solution enables manufacturers in the pulp & paper industry to reduce the cost of their daily routine analysis while improving the quality of their product.

The quality of paper depends strongly on physical and NIRS on the other hand re quires neither chemicals nor chemical properties of the wood pulp from which it is hardly any sample preparation. It can can even be used made. Relevant key parameters such as kappa number, by non-che mists and provides results in less than a min-densitiy etc. are still often determined in the laboratory ute. Fur ther more, multiple che mi cal and physical param-by time consuming physical or wet chemical analysis eters can be determined simultaneously with a single involving com plex sample preparation.

mea surement. The combined be nefits of this tech-nology make NIRS the ideal solution for a large number of daily QA/QC measurements or at-line process analysis.

Easy-to-use

• Turnkey solution

• Measure at the push of a button

• No expertise required Fast

• No sample preparation

• Analysis results within one minute

• More than 15 minutes time saving compared to reference methods

$

SAVE

Cost minimizing

MONEY

• No solvents, no reagents

• No waste disposal Clean

• Non-destructive, chemical-free method

• Minimum of impact on health and environment





Turnkey solution for pulp analysis 03

The Metrohm solution for pulp analysis comes with a ready-to-use pre-calibration model for the determination of the kappa number, density, buckling strength, break-ing strength, tensile strength, and pump freeness. Due to this pre-calibration, the Metrohm solution can be used as a starter mo del without any prior method development.

Reliable results from day one Range

SECV

R2

The robust pre-calibration model allows precise and ac -

Applied density in g/cm³ 0.2–0.65 0.039 0.855

curate determination of different parameters of wood Buckling strength in MPa 20–94 7.4 0.821

pulp with excellent reproducibility. The performance of Breaking strength in MPa 6–32

2.6 0.828

the pre-calibration can be improved even further, if a Tensile strength in MPa 6–68

5

0.905

smaller calibration range is selected or if it is augmented Kappa number

0–175

3.8 0.996

with customer specific samples.

Pulp freeness in mL

130–800

72

0.766

Straightforward and intuitive operation Metrohm instruments for Vis-NIR are controlled by Vision Air software. Vision Air provides two environments tailo red to different users’ needs: Vision Air routine en ables secure daily operation by routine users, while Vision Air Manager allows experienced and authorized users to con trol data and perform instrument configurations. For daily routine analysis, measurements can be performed with two simple clicks.

Customized service and support Metrohm supports users by updating the default pre-ca -

lib ration on demand with customer specific samples. This improves the performance of the method and/or extends it to new applications. Such updates are easily performed in the Vision Air Manager network mode. When using Vision Air Network, all instruments within a global customer network can be synchronized at the push of button.

Customer specific calibrations can be easily developed for the determination of additional quality parameters of pulp e.g. lignin or cellulose content.

Ordering information 6.607.2300

NIRS pre-calibration for pulp analysis



Requires hardware

2.922.0010

NIRS DS2500 Analyzer



Comprised of:

1.922.0010

NIRS DS2500 Analyzer

6.7400.030

NIRS DS2500 accessory kit

6.7430.040

Mini sample cup holder

8.922.8001EN

NIRS DS2500 manual



Requires software

6.6072.201

Vision Air 2.0



Optional software

6.6072.204

Vision Air 2.0 Server

6.6072.206

Vision Air 2.0 Network



Requires certified standards (select one of the following) 6.7450.000

NIRS reflection standard, set of 2

6.7450.010

NIRS reflection standard, set of 7 (for the regulated range) Accessories

6.7402.050

NIRS DS2500 large sample cup 6.7425.100

NIRS DS2500 Iris

G, CH-9100 Herisau

ohm A

witzerland by Metr

www.metrohm.com

, printed in S

SW

-06

Subject to modifications

Layout by Ecknauer+Schoch A 8.000.5225EN – 2017