The phrase "an approximate density of" is correct and usable in written English.
It can be used when discussing measurements or estimates related to the density of a substance or material.
Example: "The sample showed an approximate density of 2.5 grams per cubic centimeter."
Alternatives: "a rough density of" or "an estimated density of".
The cells were resuspended in STEMdiffTM Neural Induction Medium with 10 μmol/L Y-27632 and plated onto Matrigel-coated culture dishes at an approximate density of 2 × 105 cells/cm2.
Here, we conduct linkage analysis by genotyping our UK and US families to an approximate density of 1 microsatellite marker every 5 cM.
Array patterns with two color cell types, (MG1655 cells containing pZS*2R-CFP and pZS*2R-Venus plasmids) were printed with 10 drops per location at an approximate density of 10 cells per droplet.
The cells were first grown axenically in a 10-litre batch culture to reach an approximate density of 106 cells mL−1, then volumes of 250 ml were transferred to 75 cm2 sterile Falcon polystyrene flasks to reach cell densities of 0.15 1.0×106 cells mL−1 on the day of the experiment.
This yielded an approximate density of ~2.5 × 10 cells/cm.
Cells were plated at an approximate density of 1 cell/150 µl (i.e., 1 cell/well).
In our work, we mainly focussed on the development of an approximate Density Functional method (DFTB: Density Functional Tight Binding) and its integration into a multi-scale framework, including combined quantum mechanical/molecular mechanical (QMMM) methods, and a coupling with continuum electrostatic methods (‚Multi-scale modelling').
Most farmers provided information on the area of their farms and the approximate density of bullfrogs within the area.
If we assume the approximate density of genes in the mouse genome is 16 per cM [ 26], an interval of 0.0625 should be used in order to obtain single gene resolution.
Cells were inoculated at low density (4 × 105 cell/ml and 8 × 105 for cells grown in antiphase with the day/night cycle), 400 ml were dispatched in flasks and further grown for 4 days to reach the approximate density of 3 × 106 cell/ml and 6 × 106 cell/ml for antiphase grown cells).
To achieve more reliable results, we assumed that hardwood (e.g. beech) and softwood (e.g. spruce) have approximate densities of 1000 and 800 kg/m3, respectively.
