Public tenders for chemical in Exeter United Kingdom

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Forest Replanting, Protection and Maintenance in West England.

Forestry Commission | Published October 3, 2015  -  Deadline November 6, 2015
cpvs
77200000

West England Forest District (part of Forestry Commission England) are inviting tenders for planting and subsequent maintenance including beating up and chemical weed control, issued in 16 lots. All lots will include some or all of the following work: — restock planting of conifers and broadleaves with either spades or mattocks, — supply and erection of tree shelter/guards, — management and storage of on-site stocks, — beating up of conifers and broadleaves, including those in tubes, — supply and application of herbicide, — application of insecticide, — mechanical (hand or motor/manual) weeding, — Other general work relating to the establishment site, such as stake and tube maintenance, movement of materials.

Supply of an Inductively Coupled Plasma - Optical Emission Spectrometer

UNIVERSITY OF EXETER | Published February 9, 2017  -  Deadline December 1, 2016
Winner
Agilent Technologies LDA UK Ltd
cpvs
38433000

The ICP-OES will be purchased to aid chemical analyses in conjunction with the NERC funded project JET - “Integrated Understanding of the Early Jurassic Earth System and Timescale”. Analyses will be performed on fossil shell materials and rocks to evaluate palaeoenvironmental parameters recorded in these geomaterials. Fossil materials that will be analysed in conjunction with the JET project comprise calcite. For the understanding of the preservation of these shell materials and the palaeoenvironmental information recorded in them, concentrations of Mg, Mn, Fe and Sr are of the greatest interest. The limited variabitility of Mg/Ca and Sr/Ca ratios within the fossils makes it necessary to measure these ratios at great reproducibility (~ 1 % 2sd) in order to achieve a sufficient signal to noise ratio. Mn and Fe concentrations in the shell material are critical to ascertain good fossil preservation and minor differences (in the range of a few µg/g in the calcite) can be meaningful for such interpretation. Because of contraints on material availability the instrument needs to be able to quantify Mn and Fe concentrations in solutions at levels of ca. 1 ng/g.

Supply of an Inductively Coupled Plasma - Optical Emission Spectrometer

UNIVERSITY OF EXETER | Published November 16, 2016  -  Deadline December 1, 2016
cpvs
38433000

The ICP-OES will be purchased to aid chemical analyses in conjunction with the NERC funded project JET - “Integrated Understanding of the Early Jurassic Earth System and Timescale”. Analyses will be performed on fossil shell materials and rocks to evaluate palaeoenvironmental parameters recorded in these geomaterials. Fossil materials that will be analysed in conjunction with the JET project comprise calcite. For the understanding of the preservation of these shell materials and the palaeoenvironmental information recorded in them, concentrations of Mg, Mn, Fe and Sr are of the greatest interest. The limited variabitility of Mg/Ca and Sr/Ca ratios within the fossils makes it necessary to measure these ratios at great reproducibility (~ 1 % 2sd) in order to achieve a sufficient signal to noise ratio. Mn and Fe concentrations in the shell material are critical to ascertain good fossil preservation and minor differences (in the range of a few µg/g in the calcite) can be meaningful for such interpretation. Because of contraints on material availability the instrument needs to be able to quantify Mn and Fe concentrations in solutions at levels of ca. 1 ng/g.
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