Solutions + buffers
Buffer Calculator
Choose a buffer, pH, concentration, volume, and preparation method to build a practical recipe.
Build a buffer recipe →iPhone + iPad
RayCrest Lab Calculator
Buffer recipes, solution math, conversions, and timers for the bench. Calculate buffer recipes, convert concentration units, prepare solutions, and keep protocol timers on iPhone and iPad.
Choose how you want to calculate
Use the free web calculators now, or continue in the app for saved recipes and protocol timers.
- Release status
- Available on the App Store
- Page last updated
Buffers
Solution prep
Conversions
Timers
Lookup optional
Free browser tools
Start with a web calculator.
No download or account required. Calculations run locally in your browser and produce bench-ready summaries.
Solution preparation
Molarity Calculator
Solve mass, concentration, or volume with unit-aware inputs and a calculation record.
Calculate molarity →Dilutions
Dilution Calculator
Use C1V1 = C2V2 to calculate stock volume, diluent, and a bench-ready instruction.
Plan a dilution →DNA + RNA
DNA & RNA Copy Number
Estimate molecular weight, copies per volume, femtomoles per volume, and total copies.
Calculate molecular copies →Bench-ready tools
Focused calculators for the work around every protocol.
RayCrest Lab Calculator is built for scientists who need fast, reviewable calculations without switching between spreadsheets, search tabs, and scratch notes.
Recipes
Buffer recipes
Turn target pH, concentration, volume, and preparation choices into practical buffer recipes you can review before prep.
Solutions
Solution prep
Solve concentration, volume, mass, molecular weight, and dilution relationships with unit-aware inputs.
Conversions
Unit conversions
Convert mass/volume, mole/volume, and molarity units while keeping the result clear enough to check.
Timers
Protocol timers
Save named timers for recurring bench steps such as incubations, wash steps, heat shock, and recovery.
Charts
Buffer charts
Compare common buffer systems by useful pH range, then move from selection to recipe parameters.
Lookup
Optional compound lookup
Use online lookup when you want public chemistry data to help fill compound information, or enter molecular weights manually.
iPhone + iPad
Works where your protocol is running.
Use quick phone-sized calculators at the bench, or open the larger iPad layout when you need more room for recipes, charts, and timers.
iPhone
Fast calculations in one hand.
Use quick conversions, recipes, and timers next to the bench without opening a laptop.
iPad
More room for planning.
Review larger buffer charts, solution forms, recipe views, and timer lists when you want a fuller layout.
Calculators
Common references, functions and calculations you need in the lab.
Privacy + safety
Local by default. Online lookup only when you ask.
Saved recipes, compounds, and preferences stay on your device. Optional compound lookup can query public chemistry services when enabled. RayCrest Lab Calculator does not include analytics, advertising SDKs, or tracking frameworks.
Calculation aid
RayCrest Lab Calculator is a calculation aid for research and educational lab workflows. Always verify units, pH, compatibility, and safety requirements before preparing reagents.