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    XRF Scientific Ltd is the World’s pre-eminent manufacturer of quality, cost effective, borate fluxes. We can provide standard borate fluxes or custom blends to meet your specific needs.

    From raw material through to final product our flux uniquely provides the modern laboratory with a quality that enables elemental analysis with limited background interference. The source of our raw material is monitored and provides the basis to consistent and quantitative results.

    Our product range delivers you with choice, across the various ratios of Lithium Tetraborate and Lithium Metaborate in both granular and beaded (spherical) form.

    XRF Fluxes are non-hygroscopic vitreous particles across both product forms either granular or beaded (spherical). With a density level to ensure the flux in the crucible does not exceed more than 50% capacity and a consistent low LOI (water content <0.04%) that will maintain the sample:flux ratio in line with good analytical results.

    All XRF Fluxes are fully analysed and documented across 20 relevant elements providing you, the analyst, with the reassurance of not having to necessarily re-calibrate the spectrometer with each delivery/batch.

    Integrated additives such as LiNO3 and NaNO3 support the oxidization consistently and thoroughly. These compounds may be combined with LiI or LiBr as a release / non-wetting agent (NWA) to maintain dependable quantitative results. The end user can be assured that no matter which formulation is used, either with or without additives, the basis to your best practice analytical process will remain constant.

    Our stock holdings are maintained at a level to eliminate delays in supply, providing you with the comfort and continuity of production.

     

    • 99.99%+ minimum purity
    • Granular or microbeads (spherical) physical forms
    • Non-hygroscopic vitreous particles
    • High density to ensure the flux stays inside the crucible during agitation processes
    • Sodium, barium or lanthanum flux based options
    • Customised additive levels: release agents and oxidisers

     

    LT100 (Lithium Tetraborate 100%)

    This flux is classified as “acidic” and is generally used for higher concentrations of basic oxide samples or for samples containing high proportions of limestone. This flux is not suitable for highly acidic samples.

    A major disadvantage of this flux is the relatively high melting temperature (925 degrees C) which causes accelerated wear on platinum apparatus and fusion equipment. In most parts of the world, this flux is being replaced by eutectic pre fused mixtures of lithium tetraborate/lithium metaborate, which give very satisfactory results with significantly lower melting temperatures, thereby prolonging platinum labware life and fusion apparatus.

    Application examples:

    • Copper Sulphate
    • Calcium Oxide
    • Magnesium oxide

    66:34 (Lithium Tetraborate 66% / Lithium Metaborate 34%)

    This eutectic flux is more “alkaline” than LT100 and is more suitable for alumino-silicates and calcareous refractories. The melting temperature is 875 degrees C.

    This flux is used extensively in Europe and is very similar in application and properties to the 50:50 flux used in the US.

    Application examples:

    • Alumino-silicates
    • Calcerous refactories

    50:50 (50% Lithium Tetraborate / 50% Lithium Metaborate)

    This flux is a general purpose flux formulated for use with neutral samples.

    Application examples:

    • Alumina

    12:22 (Lithium Tetraborate 35.3% / Lithium Metaborate 64.7%)

    This eutectic flux is “alkaline” and has universal application particularly for alumino-silicates and more acidic oxides. It is generally less prone to cracking and is suitable for most materials such as iron ore, mineral sands, cement, nickel ore and general laboratory analysis.

    The melting temperature of this flux is significantly lower than the above fluxes at 825 degrees C and the life of platinum ware and fusion apparatus is therefore prolonged by using this flux. This flux formula was originally developed in Australia and is used exclusively by the iron ore, mineral sands, uranium, nickel and cement industries.

    Application examples:

    • Iron Ore
    • Nickel
    • Cement
    • Mineral Sands
    • Uranium

    LM100 (Lithium Metaborate 100%)

    Lithium metaborate, LiBO2, often referred to as the ICP flux. Its melting point is 845 °C; it reacts easily with acidic samples and is therefore called a “basic” flux.

    Application examples:

    • Wet chemistry

     

    Oxidizers

    Oxidizers are added to the flux to help ensure complete oxidation of the sample before fusion takes place.

    • Lithium nitrate oxidising agent 1 – 10%
    • Sodium nitrate oxidising agent 5 – 20%

    Release Agents

    Release agents increase the surface tension of the mix. They help the bead release from the platinumware and so prolong its life and reduce cracking.

    • Lithium bromide release agent 0.1 – 1.5%
    • Lithium iodide release agent 0.1 – 1.5%
    • Potassium bromide release agent 0.1 – 1%
    • Ammonium iodide release agent 0.1 – 1.5%

     

    CategoryDescriptionPhysical TypeProduct Code
    Granular fluxes without additivesLT-100 (Granular), without additionGranular1020100
    Granular fluxes without additives80:20 (Granular), without additionGranular1015900
    Granular fluxes without additives70:30 (Granular), without additionGranular1015600
    Granular fluxes without additives66:34 (Granular), without additionGranular1013800
    Granular fluxes without additives50:50 (Granular), without additionGranular1007300
    Granular fluxes without additives12:22 (Granular), without additionGranular1003200
    Granular fluxes without additives20:80 (Granular), without additionGranular1007000
    Granular fluxes without additivesLM-100 (Granular), without additionGranular1017800
    Granular fluxes with release agentsLT-100 (Granular) with the addition: 0.5% Lithium BromideGranular1019200
    Granular fluxes with release agents66:34 (Granular) with the addition: 0.5% Lithium BromideGranular1012500
    Granular fluxes with release agents50:50 (Granular) with the addition: 0.25% Lithium BromideGranular1008300
    Granular fluxes with release agents50:50 (Granular) with the addition: 0.5% Lithium BromideGranular1008500
    Granular fluxes with release agents12:22 (Granular) with the addition: 0.25% Lithium BromideGranular1000400
    Granular fluxes with release agents12:22 (Granular) with the addition: 0.5% Lithium BromideGranular1001300
    Granular fluxes with release agents12:22 (Granular) with the addition: 1.0% Lithium BromideGranular1001500
    Granular fluxes with release agents50:50(Granular) with the addition: 1.0% Lithium BromideGranular1007800
    Granular fluxes with release agentsLT-100 (Granular) with the addition: 0.5% Lithium IodideGranular1019300
    Granular fluxes with release agents66:34 (Granular) with the addition: 0.5% Lithium IodideGranular1012600
    Granular fluxes with release agents66:34 (Granular) with the addition: 1.0% Lithium IodideGranular1012800
    Granular fluxes with release agents50:50 (Granular) with the addition: 0.5% Lithium IodideGranular1008600
    Granular fluxes with release agents12:22 (Granular) with the addition: 0.5% Lithium IodideGranular1001400
    Granular fluxes with release agentsLM-100 (Granular) with the addition: 0.5% Lithium IodideGranular1017825
    Granular fluxes with release agents50:50 (Granular) with the addition: 0.4% Sodium IodideGranular1008990
    Granular fluxes with release agents66:34 (Fine grind) with the addition: 10.0% Lithium FluorideGranular1015110
    Granular fluxes with release agents66:34 (Granular) with the addition: 0.5% Potassium Bromide (BrK)Granular1012904
    Lithium nitrate fluxesLT100 (Granular) with the addition: 5.0% Lithium NitrateGranular1022005
    Lithium nitrate fluxes12:22 (Fine grind) with the addition: 4.0% Lithium NitrateGranular1005800
    Lithium nitrate fluxes12:22 (Fine grind) with the addition: 5.0% Lithium NitrateGranular1005900
    Lithium nitrate fluxes12:22 (Granular) with the addition: 10.0% Lithium NitrateGranular1001800
    Lithium nitrate fluxes12:22 (Granular) with the addition: 2.0% Lithium NitrateGranular1002200
    Lithium nitrate fluxes12:22 (Granular) with the addition: 4.0% Lithium NitrateGranular1002500
    Lithium nitrate fluxes12:22 (Granular) with double addition: 4.0% Lithium Nitrate and 0.5% Lithium BromideGranular1002510
    Lithium nitrate fluxes66:34 (Granular) with the addition: 10.0% Lithium NitrateGranular1012900
    Lithium nitrate fluxes50:50 (Granular) with the addition: 10.0% Lithium NitrateGranular1010450
    Lithium nitrate fluxes66:34 (Fine Grind) with the addition: 4.0% Lithium NitrateGranular1015300
    Lithium nitrate fluxes66:34 (Granular) with double addition: 10% Lithium Nitrate & 0.5% Lithium BromideGranular1012904
    Sodium nitrate fluxes12:22 (Fine grind) with the addition: 12.82% Sodium NitrateGranular1005400
    Sodium nitrate fluxes12:22 (Fine grind) with the addition: 20.0% Sodium NitrateGranular1005700
    Sodium nitrate fluxes12:22 (Fine grind) with double addition: 20.0% Sodium Nitrate & 0.5% Lithium BromideGranular1006260
    Sodium nitrate fluxes12:22 (Fine grind) with the addition: 5.0% Sodium NitrateGranular1006000
    Sodium nitrate fluxes12:22 (Granular) with the addition: 10.0% Sodium NitrateGranular1001900
    Sodium nitrate fluxes12:22 (Granular) with the addition: 12.82% Sodium NitrateGranular1002000
    Sodium nitrate fluxes12:22 (Granular) with the addition: 15.0% Sodium NitrateGranular1002100
    Sodium nitrate fluxes12:22 (Granular) with the addition: 20.0% Sodium NitrateGranular1002400
    Sodium nitrate fluxes12:22 (Granular) with the addition: 5.0% Sodium NitrateGranular1002700
    Sodium nitrate fluxes12:22 (Granular) with double addition: 12.82% Sodium Nitrate & 0.5% Lithium BromideGranular1002010
    Sodium nitrate fluxes50:50 (Granular) with double addition: 12.82% Sodium Nitrate & 0.5% Lithium BromideGranular1008850
    Sodium nitrate fluxes66:34 (Fine grind) with the additon: 20.0% Sodium NitrateGranular1015200
    Sodium nitrate fluxes66:34 (Granular) with double addition: 12.82 Sodium Nitrate & 0.5% Lithium BromideGranular1013055
    Microbead fluxes without additivesLT-100 (Microbeads) Fused in addition: zeroMicrobeads1020100MB
    Microbead fluxes without additives80:20 (Microbeads) Fused in addition: zeroMicrobeads1015900MB
    Microbead fluxes without additives70:30 (Microbeads) Fused in addition: zeroMicrobeads1015600MB
    Microbead fluxes without additives66:34 (Microbeads) Fused in addition: zeroMicrobeads1013800MB
    Microbead fluxes without additives50:50 (Microbeads) Fused in addition: zeroMicrobeads1007300MB
    Microbead fluxes without additives12:22 (Microbeads) Fused in addition: zeroMicrobeads1003200MB
    Microbead fluxes without additives20:80 (Microbeads) Fused in addition: zeroMicrobeads1007000MB
    Microbead fluxes without additivesLM-100 (Microbeads) Fused in addition: zeroMicrobeads1017800MB
    Microbead fluxes with additivesLT-100 (Microbeads) with a fused in addition 0.5% Lithium BromideMicrobeads1019200MB
    Microbead fluxes with additives66:34 (Microbeads) with a fused in addition 0.5% Lithium BromideMicrobeads1012500MB
    Microbead fluxes with additives50:50 (Microbeads) with a fused in addition 1.0% Lithium BromideMicrobeads1008700MB
    Microbead fluxes with additives50:50 (Microbeads) with a fused in addition 0.5% Lithium BromideMicrobeads1008500MB
    Microbead fluxes with additives50:50 (Microbeads) with a fused in addition 0.25% Lithium BromideMicrobeads1008300MB
    Microbead fluxes with additives12:22 (Microbeads) with a fused in addition 0.5% Lithium BromideMicrobeads1001300MB
    Microbead fluxes with additives12:22 (Microbeads) with a fused in addition 0.25% Lithium BromideMicrobeads1000500MB
    Microbead fluxes with additivesLM-100 (Microbeads) with a fused in addition 0.5% Lithium BromideMicrobeads1017820MB
    Microbead fluxes with additivesLT-100 (Microbeads) with a fused in addition 0.5% Lithium IodideMicrobeads1019300MB
    Microbead fluxes with additives66:34 (Microbeads) with a fused in addition 0.5% Lithium IodideMicrobeads1012600MB
    Microbead fluxes with additives66:34 (Microbeads) with a fused in addition 1.0% Lithium IodideMicrobeads1012800MB
    Microbead fluxes with additives50:50 (Microbeads) with a fused in addition 0.5% Lithium IodideMicrobeads1008600MB
    Microbead fluxes with additives12:22 (Microbeads) with a fused in addition 0.18% Lithium IodideMicrobeads1000805MB
    Microbead fluxes with additives12:22 (Microbeads) with a fused in addition 0.5% Lithium IodideMicrobeads1001400MB
    Microbead fluxes with additivesLM-100 (Microbeads) with a fused in addition 0.5% Lithium IodideMicrobeads1017825MB