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Questions related to pH
I have a body of water with about pH: 6.8 and alkalinity of about 30 mg/L CaCO3. And I am looking to increase the alkalinity as much at as least to 100 mg/L CaCO3 but without increasing pH level....
04 November 2021 6,347 10 View
I need to use LB media at different pH (6.5/7/8) and I found that MOPS buffer has the right pKa that cover my range: MOPS pKa at 25°: 7.14 MOPS pH range: 6.5 – 7.9 However, I don't know at which...
03 November 2021 7,124 1 View
After each cycle of usage of a photocatalyst for exampe in dye degradation how to recover the photocatalyst and use it further in other cycle?
03 November 2021 6,683 9 View
Am working on Coding sequence of the bacterial plasmid and need to calculate the codon stabilization coefficient. So can anyone suggest a procedure/tool/software to calculate it.
02 November 2021 4,075 0 View
I am trying to dissolve a hydrophobic drug in PBS (pH= 7.4) or Simulating Body Fluid (SBF) of other pH like 6.5 or 8. But it is hardly soluble. If I add tween 80 or tween 20 in the PBS or SBF,...
30 October 2021 7,912 3 View
Hello, I have been following the Drift method for my chars (0,1M NaCl solution and pH adjusted with 0,01-0,1M NaOH/HCl) by adding 50mg char in 50mL of a 0,1M NaCl solution pH adjusted. One of my...
19 October 2021 6,844 1 View
Piranha solution (H2SO4:H2O2) has different ratios, such as 3:1, 4:1, 7:1. I want to know what is the difference between them. Do they have different functions or efficiency? Actually, which is...
13 October 2021 6,019 11 View
Fish type: Rainbow trout (Oncorhynchus mykiss) The culture is intensive and the water quality is unknown Thanks, Ahmadreza
07 October 2021 9,864 3 View
For the compounding of rubbers (NR and SBR), I have noticed that most of the plasticizers (Rubber process oils), be it mineral- based or bio-sourced, they all have a flash-point higher than 200C....
05 October 2021 7,704 7 View
algae index , water quality
04 October 2021 3,626 7 View
Required for protein structure characterization
02 October 2021 6,727 2 View
I am purifying a 20 kDa recombinant protein. Protein concentration is greatly reduced after dialysis. My dialysis buffer is 20 mM Tris buffer pH 8.0 that contains 150 mM NaCl, 10% glycerol. How...
15 September 2021 7,884 8 View
I have a 20% chlorhexidine digluconate solution (in water) which I want to dilute using TSB or RPMI medium, however, whatever I tried, there is always precipitation. I tried adjusting the pH of...
13 September 2021 4,302 1 View
I am preparing photocatalysts based on g-C3N4 and molybdates, but I have doubts about the heterojunction that will be formed between them.
11 September 2021 6,315 8 View
To calculate the molarity of acidic solutions (wt/v%), Igenerally use the formula, N.o. moles = (relative density (in g/ml) *1000(ml) * mass% of solute) / (100*molar mass of the solute(g/mol)) The...
06 September 2021 5,837 7 View
hy all, I am trying to deposit Cu on Al, glass using magnetron sputtering at Rt and RF power 250. But the adhesion of the Cu layer to the Al substrate is very low and peeled off using normal...
01 September 2021 8,276 3 View
I have doped 3%, 4% and 5% of a rare earth metal oxide into a parent material. Is it possible to identify or confirm the dopant through HR-TEM even at these small dopant percentage levels? Also,...
30 August 2021 5,631 4 View
For hydrochemical evaluation of surface water from a subtropical urban river of Bangladesh.
29 August 2021 8,989 9 View
Now I'm preparing L929 supernatant for BMDM cell culture later. After harvesting the supernatant, everything seemed fine, I filtered through 0.22 filter then put it in the -20 oC fridge, at that...
24 August 2021 8,835 3 View
Urea is the major nitrogen fertilizer in India almost 80% of the nitrogen fertilizer is in the form of urea, so application dynamics of urea with relation to irrigation has a prime importance to...
23 August 2021 2,900 16 View
I want to measure gap junctional permeability of cells in culture. Lucifer yellow (dilithium salt) has maximum solubility in water. However, it seems appropriate to use PBS for my purpose. Has...
23 August 2021 876 2 View
I have oxidized one polysaccharide and make a hydrogel with Schiff base reaction with gelatin, but the hydrogel makes my medium acidic. I cannot realize what step of my work is wrong.
19 August 2021 2,230 3 View
Are there any international or national guidelines for quality of sediment (in reference of heavy metals) in rivers? kindly share the information regarding this.
09 August 2021 1,641 2 View
Soil test is attached, main concerns are tremendous amounts of calcium and very high pH. I have access to DAP/TSP and the more expensive commercial P2O5 fertilizers. I read that TSP may have an...
02 August 2021 6,148 3 View