Back to Search
Start Over
A Solid State pH Control System for Algal Culturing and Uptake Studies
- Source :
- Ecology. 55:895-898
- Publication Year :
- 1974
- Publisher :
- Wiley, 1974.
-
Abstract
- A bstract. An inexpensive solid state pH control circuit was built for external use with existing pH meters that can use either a gas or a liquid solution for pH control of culture media. Mastigocladus laminosus showed a 49% reduction in the rate of radiophosphate (P-32) uptake between gas-controlled (30% C02 in air) pH intervals of 8.7 (optimal uptake) and 5.7. Isotope uptake rates at higher pH values (achieved by manual additions of 0.1 N NaOH) decreased slightly between pH 8.7 and 9.7 and declined 36% between 9.7 and 10.7, where trichome motility and the ability to colonize new substratum were inhibited. Suppression of growth based on short-term (96 hr) dry weights, of which only 24 hr were at the selected pH values, was not evident throughout the experimental pH range.
Details
- ISSN :
- 00129658
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- Ecology
- Accession number :
- edsair.doi...........7d6a10392e180155dfa7fe44664255f3