Tim James

7 Questions 12 Answers 0 Followers

Questions related from Tim James

Hi I'm running an experiment using calcium carbonate to simulate various turbidities and I need to find a 1 micron that will filter 5 litres?

I've been looking at cartridge filters but they require high volumes. I only really need a 45mm filter but having trouble sourcing them.

30 June 2020 7,104 0 View

Can someone suggest a way to calculate dry cell weight for algae using total suspended solids method?

I am using the total suspended solids methods to quantify algal growth. The standard calculation I am using is (weight of filter + dried residue (mg) - minus weight of filter (mg)) x 1000,...

07 August 2013 3,892 2 View

When culturing algae, is there a maximum sampling volume that may be withdrawn e.g 10 % without compromising results?

I am culturing algae, utilising a batch regime (800 ml culture media) over five days. I am sampling N, P, COD, dry cell weight and cell counts. Thus is there a maximum Volume/Volume % sample...

07 August 2013 3,156 13 View

Filters to use when completing nitrogen, phosphorus and COD analyses to remove algae?

I want to complete nutrient analyses on the filtrate from dry cell weight analysis. Thus I will be using a 0.45 micron membrane filter. However, it occurs to me that standard filters used to...

20 June 2013 5,609 14 View

Blank protocol using OD on wastewater to establish OD V biomass density?

I am culturing Chlorella vulgaris and want to establish a relationship between optical density and biomass concentration, both dry cell weight and cell density. I will use OD 680 and dilute...

20 June 2013 974 7 View

Why don't my cellulose nitrate filters stabilise after washing, oven drying and leaving them in a desiccator?

When weighting after removing the filters from desiccator, the filters loses weight and doesn't stabilize for over an hour.

01 October 2012 4,230 1 View

Protocol for testing antioxidants in microalgae

I am trying to find a method or assay that may be applied to microalgae? I have heard of the Trolox equivalent antioxidant capacity (TEAC) assay, however I cannot find a supplier. Any help...

21 September 2012 8,947 5 View