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title: NIR Analysis Tools | Felix Knowledge Base
description: NIR Analysis Tools
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1. [Felix Knowledge Base](https://knowledgebase.felixinstruments.com/)
2. [NIR Analysis Tools](https://knowledgebase.felixinstruments.com/nir-analysis-tools)

# NIR Analysis Tools

## F-751 Quality Meters

- [Do I have to completely cover the lens with the fruit?](https://knowledgebase.felixinstruments.com/do-i-have-to-completely-cover-the-lens-with-the-fruit)
- [What mango varieties were used to build the model for the Mango Quality Meter?](https://knowledgebase.felixinstruments.com/what-mango-varieties-were-used-to-build-the-model-for-the-mango-quality-meter)
- [What is the best location to take measurements on an avocado?](https://knowledgebase.felixinstruments.com/what-is-the-best-location-to-take-measurements-on-an-avocado)
- [How do I change the language of my device?](https://knowledgebase.felixinstruments.com/how-do-i-change-the-language-of-my-device)
- [Does the Avocado Quality Meter work on small avocados?](https://knowledgebase.felixinstruments.com/does-the-avocado-quality-meter-work-on-small-avocados)
- [What variety of fruit was the F-751 Kiwifruit model built with?](https://knowledgebase.felixinstruments.com/what-variety-of-fruit-was-the-f-751-kiwi-model-built-using)
- [What avocado types is the F-751 Avocado designed to work with?](https://knowledgebase.felixinstruments.com/what-avocado-types-is-the-f-751-avo-designed-to-work-with)
- [The instrument is making predictions that are consistently high/low - what should I do?](https://knowledgebase.felixinstruments.com/the-instrument-is-making-predictions-that-are-consistently-high/low-what-should-i-do)

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## F-750 Produce Quality Meter

- [F-750/AppBuilder Servers, Bluetooth, Remote Upload and File Manipulation](https://knowledgebase.felixinstruments.com/f-750/appbuilder-servers-bluetooth-remote-upload-and-file-manipulation)
- [How do I build a new model or prediction app?](https://knowledgebase.felixinstruments.com/how-do-i-build-a-new-model-or-app)
- [F-75X Clear Internal Memory Procedure](https://knowledgebase.felixinstruments.com/f-75x-clear-internal-memory-procedure)
- [Is it normal to pick up ethylene readings in ambient air?](https://knowledgebase.felixinstruments.com/is-it-normal-to-pick-up-ethylene-readings-in-ambient-air)
- [Model Building with the F-750](https://knowledgebase.felixinstruments.com/model-building-with-the-f-750)
- [AppBuilder Gives Error When Building Model](https://knowledgebase.felixinstruments.com/appbuilder-gives-error-when-building-model)

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- [NIR Analysis Tools](https://knowledgebase.felixinstruments.com/nir-analysis-tools#main-content)

    - [F-751 Quality Meters](https://knowledgebase.felixinstruments.com/nir-analysis-tools#f-751-quality-meters)
    - [F-750 Produce Quality Meter](https://knowledgebase.felixinstruments.com/nir-analysis-tools#f-750-produce-quality-meter)
- [Gas Analysis Tools](https://knowledgebase.felixinstruments.com/gas-analysis-tools#main-content)

    - [F-900 Ethylene Analyzer](https://knowledgebase.felixinstruments.com/gas-analysis-tools#f-900-ethylene-analyzer)
    - [F-9xx Handheld Gas Analyzers](https://knowledgebase.felixinstruments.com/gas-analysis-tools#f-9xx-handheld-gas-analyzers)
- [Software](https://knowledgebase.felixinstruments.com/software#main-content)

    - [AppBuilder](https://knowledgebase.felixinstruments.com/software#appbuilder)

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