Basics of FT-NIR

FT-NIR

MPA Specifications

High Sensitivity Detectors

• InGaAs 12800 - 4000 $cm^{-1}$
• PbS 12800 - 3600 $cm^{-1}$
• Si 15500 - 9000 $cm^{-1}$

Sample Forms

• Liquids
• Emulsions
• Dispersions
• Pastes
• Resins
• Seeds
• Powders
• Granulates
• Tablets
• Vials
• Papers
• Foils
• Coatings

MPA sample compartment

MPA sample compartment

• Easy transmission measurements of liquids in cuvettes or disposable vials
• Standard vial 8 mm diameter
• Optional : Sample heater up to $120° C$

Sample compartment Apps

• Identify substances
• Residual moisture (humedad) in solvents
• OH-Number identification
• Iodine value in edible oils ( Yodo en aceites comestibles)
• Quantification of additives

Advantages

• No cross contamination
• temperature control

Experiment

Use MPA sample compartment Standard expriment file: MPA_SampleCompartment.xpm

MPA Integrating sphere

MPA Integrating sphere

( See : NIR Basics ppt for ilustration)

• easy measurements of solids and emulsions in diffuse reflectance.
• Gold-coated sphere.
• ideal for powders, granules and heterogeneus samples

Integrating Sphere Apps

• Identification
  • Raw materials
  • Polymers and foils

• Quantification
  • Mixture
  • Moisture in powders and granules
  • Polymere evaluations
  • Fat, proteins and moisture in food and feed
  • Fiber and ash in feed

Integrating sphere accesories

• Sample wheel : Standard vial 22mm diameter
  • Power analysis (30)
• Standard Quartz cup ( 50 and 90 mm diameter)

OQ - Photometric accuracy test

When running this OQ (Operational Qualification) test, manual intervention is required by placing a water sample on the integrating sphere

MPA Fiber optics probes

MPA Fiber optics probes

• Connections for two handheld Probes
  • Solids Probe (Reflection)
  • Liquids Probe (Transmission)
• Trigger at the Probe Grip
• Samples measured directly in containers, e.g. in the warehouse (bodega, almacén).
• QA/QC (Quality Assurance/Quality Control) at the goods : raw material control.

Advantages

• easy to use
• no sampling
• fast

Disadvantages

• cross contamination possible.

Experiment

Use the MPA Fiber optics probes Standard experiment file : MPA_Fibre1_LiquidProbe.XPM (Transmision), MPA_Fibre2_SolidProbe.XPM (Reflection)

MPA external transmission module

MPA external transmission module

• for tablets and capsules
• for feed and food

MPA external transmission module InGaAs detector

• Automated analysis of tablets in transmission
• Optional: automated 30-position Sample, Wheel for vials and Tablets of all Shapes and Sizes.

Experiments

Use the MPA external transmission module Standard experiment file - InGaAs detector : MPA_ExternalTransmission_Ref.XPM, MPA_ExternalTransmission_RefSpec.XPM, MPA_ExternalTransmission_Sample.XPM, MPA_ExternalTransmission_Sample_rotating.XPM

MPA external transmission module Si diode

• Ideal for investigaion of food
• Ideal for investigation of thick samples
• Ideal for use with Polystyrene Petri dishes
• Requires use of shutter

Experiments

Use MPA external transmission module Standard experiment file - Si diode MPA_ExternalTransmission_Si-Diod_Ref.XPM, MPA_ExternalTransmission_Si-Diod_Sample.XPM, MPA_ExternalTransmission_Si-Diod_Sample_rotating.XPM