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XRF・ICP分析用アルカリ溶融 サンプル前処理装置Claisse(クレイス)

2018/07/09 Posted by

We introduce Claisse ( sample preparation equipment for highly accurate and safe XRF · ICP analysis ) .

Claisse (Glaze) is a glass bead making machine boasting excellent bead success rate and high cost-effectiveness, which is used for sample pretreatment of fluorescent X-ray analysis (XRF). In this article, we will introduce features, comparison of press pellet method and glass bead method, and product lineup.

Features of Alkaline Melting Sample Pretreatment Equipment Claisse (Xref) for XRF · ICP Analysis 

  • Performing pretreatment by the glass bead method improves the uniformity of the sample and greatly improves the quantitative accuracy as compared with the press pellet method
  • By using borate melt or peroxide melt without using dangerous acid such as hydrofluoric acid used in ICP pretreatment, dissolving solution of refractory sample is prepared in a short time
  • We offer various kinds of high purity flux such as LIM and LIT or mixture, and we propose the optimum flux for sample melting
  • Precise furnace and cooling temperature control to create stable quality beads in a short time
  • Equipped with safety doors, safe design that can work without touching high temperature area

Press pellet method vs glass bead method comparison

We compared the press pellet method and the glass bead method in terms of processing time, XRF measurement difficulty, and XRF measurement accuracy.

Press pellet methodGlass bead method
processing timeAbout 7 to 8 minutes / sampleAbout 15 minutes / sample
XRF measurementHigh difficulty levelHigh accuracy can be easily obtained
XRF measurement accuracyMeasurement accuracy is limited
High precision

Press pellet method

In the press pellet method, ideally, the calibration sample must have the same particle size, particle uniformity, density, and linear absorption coefficient as the unknown sample (matrix match). Also, if the same element is included in more than one mineral species, various corrections including XRF alpha correction can not be performed, and measurement precision is limited.

Glass bead method

In the glass bead method, each element is homogeneously dispersed in the boric acid glass matrix in the most oxidized state, and high precision can be easily obtained because matrix matching and unknown sample are achieved. Processing time is 15 minutes to 20 minutes / sample, which is close to the ideal state, it is possible to use a single calibration curve from low concentration to high concentration.

Alkali melted sample for XRF · ICP analysis Pretreatment equipment Dissolve difficult samples in Claisse

The hardly soluble sample is heated in a Pt crucible together with the flux, and the melt is dropped into the acid, which is usually dissolved in about 15 minutes. It can be completely dissolved in 5 to 10% nitric acid or dilute hydrochloric acid in a short time, so it is safe because it does not use hydrofluoric acid (HF) or perchloric acid.

Compared to conventional methods using ultrasonic waves and pressurization, it is possible to create a total amount of solution by a simple process, and it can be processed in a short time. By using high purity flux, high purity solution can be obtained.

Various high purity fluxes

In Malvern / Panalitical, we have high purity (99.98%) flux and ultra high purity (99.995 +%) (Normally, flux purity obtained in market is around 98%).

We propose the optimum flux from LiT (Li 2 B 2 O 7), LiM (LiBO 2) and mixtures thereof according to the know-how accumulated in Claisse Co., Ltd. Because it has a vitrified structure on the surface, it is not hygroscopic, and handling Easy as well. We can also automate weighing, so please contact us .

Claisse (Craigs) product lineup

LeNeo ® (Reneo) 【For laboratory and small scale production】

  • Number of prepared samples 1 sample
  • Electric furnace heating (200 V power supply)
  • Support for XRF glass bead creation
  • Create borate or peroxide solution for chemical analysis of ICP and AA
  • Simple and safe design
  • For details and specifications here

TheOx ® (Geox) Advanced 【For medium to large scale production】

  • Number of samples to be prepared 6 samples
  • Electric furnace heating (200 V power supply)
  • Support for XRF glass bead creation
  • Create borate or peroxide solution for chemical analysis of ICP and AA
  • For details and specifications here

M4 TM ® [For medium to large scale production]

  • Number of samples to be prepared 3 samples
  • Gas furnace heating (200 V power supply and propane gas)
  • Support for XRF glass bead creation
  • Borate solution can be prepared for chemical analysis of ICP and AA
  • For details and specifications here

For further details, please do not hesitate to contact us !

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