100 mM phosphoric acid (sodium) buffer solution (pH=2.1) Sodium dihydrogen phosphate dihydrate (M.W.=156.01)..50 mmol (7.8 g) Phosphoric acid (85 %, 14.7 mol/L)…………………….50 mmol (3.4 mL) Add water to make up to 1 L. 10 mM phosphoric acid (sodium) buffer solution (pH=2.6) Sodium dihydrogen phosphate dihydrate (M.W.=156.01)..5 mmol (0.78 g) Phosphoric acid (85 %, 14.7 mol/L)…………………….5 mmol (0.34 mL) Add water to make up to 1 L. (Alternatively, dilute 100 mM phosphoric acid (sodium) buffer solution…Read More
Aim Most electronic laboratory devices equipped with RS232 (Serial) interface or a USB port however the manual does not provide you instructions how to correctly connect it to your PC or how to input values directly into programs like Excel. This procedure will show you how to connect your spectrophotometer, pH meter and analytical balance to a PC and also how to input OD600, pH and weight readings directly into Microsoft Excel. [Best_Wordpress_Gallery id=”70″ gal_title=”passive…Read More
Activity: A thermodynamic term for the apparent or active concentration of a free ion in solution. It is related to con‐ centration by the activity coefficient. Asymmetry Potential: The potential developed across the glass membrane of the measuring electrode with identical solutions on both sides. Also a term used when comparing measuring electrode potential in pH 7 buffer. ATC: Automatic temperature compensation. BNC: A quick disconnect electrical connector used to inter‐ connect and/or terminate coaxial cables. Buffer…Read More
Fermentor építés – összefoglaló
Mi az a fermentor?
Az a laboratóriumi vagy üzemi edény, amelyben mikroorganizmusokat szaporítanak.
Call to a member function id() on array