Baltic Blender
Scuba Nitrox/Trimix Blending
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Technical diving gas partial-pressure blending app. Supports nitrox and - via in-app purchase upgrades - trimix and pricing/volumes used.
Baltic Blender uses the GERG-2004 real gas model to allow a SCUBA gas blender to easily and accurately use partial-pressure techniques to blend available gasses to the desired final mixture. It is not intended as a substitute for proper training and certification in the safety, handling, and blending of high pressure gasses, but rather as a tool to perform the complex math required to reach the desired mixture. In such training classes, you would learn important safety information about the handling of high-pressure gasses. SCUBA gas blending is not to be taken lightly; it is one of the only activities where a mistake may not just kill you, but also those around you, or possibly the diver you are blending the gas for.
Traditional blending techniques have two inherent errors which the blender must learn to compensate for, traditionally by adding a fudge-factor.
* First, traditional blending uses the simple ideal gas model, but the gasses we breathe, at SCUBA cylinder pressures, are far from ideal gasses. Baltic Blender uses the GERG-2004 real gas model which predicts how the real-world gasses behave.
* Second, traditional blending generally ignores the heating of the cylinder as gas is introduced, requiring the blender to either fudge or allow the cylinder to cool. Baltic Blender requires that the blender allow the temperature to stabilize, rather than cool, between each step, so that an accurate measurement of the cylinder wall temperature using a commercially available infrared thermometer reflects the temperature of the gas inside.
Supports using preblended gas for eg. using leftover trimix or for using banked mixes.
Features ;
* Nitrox
* Trimix (via in-app purchase)
* Volume consumed & Pricing (via in-app purchase)
* Blending and topping off
* Per cylinder configurable preblend
* Metric and imperial units.
* Simultaneous work on multiple cylinders
* Grouping of tanks and pricing
* Real Gas Law using GERG-2004
* Easy to access temperature adjustments
* Configurable list of default gases
* Configurable standard temperature
* Bill printing/emailing
You can enter the data for multiple cylinders at once. Cylinders can be placed in groups for billing purposes.
** Trimix, volume consumed and pricing is only available via in-app purchase upgrades. **
GERG-2004; Kunz, O.; Klimeck, R.; Wagner, W.; Jaeschke, M. (2007): The GERG-2004 Wide-Range Equation of State for Natural Gases and Other Mixtures: GERG Technical Monograph 15 (2007) and Fortschr.-Ber. VDI, Reihe 6, Nr. 557, VDI Verlag, Düsseldorf, 2007.
The partial GERG-2004 implementation used to calculate the compressibility factors of oxygen, helium, nitrogen and their mixtures in the gas phase was inspired by open source code written by David de Marneffe (daviddemarneffe[at]y a h o o . c o m) in December 2007.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
- This app’s overall rating was recently reset.
Complete rewrite of UI for current iOS look and feel.
The developer, Eskil Olsen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Eskil Olsen
- Size
- 7.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Trimix $4.99
- Volumes & Pricing $4.99
- Trimix $4.99
- Volumes & Pricing $4.99
- Copyright
- © 2012 Eskil Olsen