Measuring the Size and Shape of Frac Sand and other Proppants

8,311 views

Published on

Gert Beckmann from Retsch Technology and Ian Treviranus from HORIBA Scientific present information about improving the particle size measurement of frac sands and proppants, in addition to measuring sphericity, aspect ratio, etc. The CAMSIZER measurements are compliant with API and ISO methods for measuring the size, shape, and % fines of proppants.

Published in: Technology, Business
2 Comments
1 Like
Statistics
Notes
  • I would like to know how Camsizer can be useful during exploration stage of Frac Sand.
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • For more information visit www.horiba.com/us/particle or e-mail labinfo@horiba.com.
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
8,311
On SlideShare
0
From Embeds
0
Number of Embeds
12
Actions
Shares
0
Downloads
221
Comments
2
Likes
1
Embeds 0
No embeds

No notes for slide

Measuring the Size and Shape of Frac Sand and other Proppants

  1. 1. CAMSIZER CAMSIZER® Dynamic Image Analysis ISO 13322-2 conform Measuring the Size and Shape of Frac Sand and other Proppants Webinar Presentation© Retsch Technology 2012 - 1 Friday, March 9th, 2012 Speaker: Dipl.-Ing. Gert Beckmann Retsch Technology GmbH Host: Ian Treviranus HORIBA Scientific Inc.
  2. 2. Abstract Measuring the Size and Shape of Frac Sand and other Proppants The size and shape of frac sands and other proppants plays a critical role in keeping fractures open and at the desired conductivity. Learn how the CAMSIZER has greatly improved the accuracy and speed of proppant analysis. This information will be useful for any petroleum engineer or proppant supplier referencing ISO 13503-2 or API RP 56/58/60 standards.© Retsch Technology 2012 - 2 This Webinar will cover the following topics: * Faster, more accurate size measurement * Reporting sphericity and roundness * Objective results in only 3 minutes * Example measurement results
  3. 3. Benefits for the Proppant Industry • Instead of size measurement with sieve shaker and shape analysis by visual inspection you can do a CAMSIZER analysis of both in a much shorter time • Reproducible results because of high statistics and accurate calibration • Measuring easily in compliance of API specifications of grain size (90%), oversize and dust (<1%), roundness and sphericity and measure the dust content before and after the crush resistance test • Measure the increase of layer coating thickness© Retsch Technology 2012 - 3 and change of roundness because of the resin coating of sand grains or ceramic proppants • Also possible: Measuring diameter and length of extrudates
  4. 4. Measuring Principle Measuring Principle© Retsch Technology 2012 - 4
  5. 5. Measuring Principle CAMSIZER Principle (Two Cameras) Dynamic Factor:© Retsch Technology 2012 - 5 Advantages • Precise full-frame images • Wide dynamic range: 30µm to 30mm
  6. 6. Measuring Principle Two-Camera-System© Retsch Technology 2012 - 6 Basic-Camera Zoom-Camera
  7. 7. © Retsch Technology 2012 - 7
  8. 8. Oil and Gas Exploration© Retsch Technology 2012 - 8 Workers at the drill hole of the rig
  9. 9. Oil and Gas Exploration© Retsch Technology 2012 - 9 Principle draft of modern and effective oil and gas exploration
  10. 10. Propped Frac & Acid Frac open fracture fracture tends to close during job once the 1/2" (frac width pressure = wf) has been released© Retsch Technology 2012 - 10 proppant acid etched used to frac walls prop the frac open
  11. 11. Different Types of Proppants© Retsch Technology 2012 - 11 Image courtesy of CARBO Ceramics *original located here: http://www.carboceramics.com/hierarchy _of_conductivity/
  12. 12. Different Types of Proppants Frac Sand (<6,000psi) • Jordan • Ottawa • Brady Resin-Coated Frac Sand (<8,000psi) • Cureable • Precured© Retsch Technology 2012 - 12 Intermediate Strength Ceramics (<10,000psi) High Strength Ceramics (<15,000psi)
  13. 13. © Retsch Technology 2012 - 13
  14. 14. Different Principles to increase the Oil and Gas Conductivity© Retsch Technology 2012 - 14 Image courtesy of Schlumberger *original located here: http://www.slb.com/
  15. 15. Natural Sand Proppants (Brown and White)© Retsch Technology 2012 - 15
  16. 16. © Retsch Technology 2012 - 16 Resin Coated Sand Proppant
  17. 17. Loading Facility of Sand Proppant Trucks© Retsch Technology 2012 - 17
  18. 18. Unloading of a Proppant Railcar© Retsch Technology 2012 - 18
  19. 19. © Retsch Technology 2012 - 19 Ceramic Proppants
  20. 20. © Retsch Technology 2012 - 20 Ceramic Proppants
  21. 21. © Retsch Technology 2012 - 21 Proppant Resin Coated Ceramic
  22. 22. Applications – Proppants High Strength and High Roundness Resin Coated Proppants • Ceramic Core • Growth of Ceramic Proppant during production process Starting Growth of Ceramic Core Proppant • Resin Coating Resin Coating© Retsch Technology 2012 - 22 Growth of Ceramic Proppant Starting Core Resin Coating
  23. 23. CAMSIZER Measurement (Start)© Retsch Technology 2012 - 23 Ceramic Proppant
  24. 24. CAMSIZER Measurement© Retsch Technology 2012 - 24 Ceramic Proppant
  25. 25. CAMSIZER Measurement (End)© Retsch Technology 2012 - 25 Ceramic Proppant
  26. 26. Competing Measuring Methods Comparison of Methods: Sieving Advantages • robust and industrial-suited • easy handling • references available from user Worn out sieves© Retsch Technology 2012 - 26 • high amount of time and work Disadvantages • low resolution, small number of investigatable classes • limited sample amount • no shape analysis possible
  27. 27. Typical Grain Sizes of Proppants© Retsch Technology 2012 - 27
  28. 28. Applications - Proppants Sieving problems (here Overloading) 1. Move 2. Sliding friction F1 3. Static friction F2© Retsch Technology 2012 - 28 Q3 [%] q3 [%/mm] 5454_PT100_xc_min_008.rdf 90 5454_random_xc_min_009.rdf 450 5454_Huntsman-sieve.ref 80 Round 400 70 particles are 350 60 captured 300 50 without 250 40 rerelease 200 30 150 20 100 10 50 0 0 0.5 0.6 0.7 0.8 0.9 1.0 xc_min [mm]
  29. 29. Sieve Correlation  CAMSIZER of Natural Brown Sand Q3 [%] 90 80 70 #16-#30-Shipment – CAMSIZER Result – width xc_min.rdf Sieve - Results - #16 - #30 — First time 1.ref 60 Sieve - Results - #16 - #30 — Second time 2.ref 50 40© Retsch Technology 2012 - 29 30 20 10 xc min 0 0.2 0.4 0.6 0.8 1.0 1.2 xc_min [mm] Comparison of sieve (* black) and CAMSIZER data (red). The agreement is excellent. The CAMSIZER measurement can directly replace the sieve analysis, without changing the product specifications.
  30. 30. CAMSIZER Results of Different Natural (Sand) Proppants q3 [%/µm] Natural-Brown-Sand-C-#12-#20-2.rdf Natural-Brown-Sand-C-#12-#20-3.rdf 0.6 Natural-Brown-Sand-C-#16-#30-1.rdf Natural-Brown-Sand-C-#16-#30-2.rdf Natural-Brown-Sand-C-#20-#40-3.rdf 0.5 Natural-Brown-Sand-C-#20-#40-4.rdf Natural-Brown-Sand-C-#30-#50-43.rdf Natural-Brown-Sand-C-#30-#50-44.rdf Natural-White-Sand-US-#40-#70-1.rdf 0.4 0.3© Retsch Technology 2012 - 30 0.2 xc min 0.1 0 500 1000 1500 xc_min [µm] Size analysis of 5 different natural sand proppant samples (#12/20, #16/30, #20/40 and #30/50). Each sample was measured twice. The repeatability is excellent. One sample of white sand #40/70 is shown for comparison.
  31. 31. Grain Size Comparison q3 [%/µm] Ceramic-Prop-EP-20-40-Mesh-40.rdf Ceramic-Prop-SB-20-40-Mesh1.rdf 0.5 Ceramic-Prop-SG-V-1.rdf Sand-Prop-SIB-20-40-MIS-9.rdf Natural-Brown-Sand-C-20-40.rdf White-Sand-Prop-UNF-20-40-17.rdf White-Sand-Prop-SIB-20-40-CHF-10.rdf 0.4 White-Sand-Prop-UNF-20-40-1.rdf White-Sand-Prop-UNF-20-40-8.rdf 0.3 0.2© Retsch Technology 2012 - 31 0.1 0 200 400 600 800 1000 1200 xc_min [µm] Size analysis of 9 different proppant (sand and ceramics) samples (#20/40). Some have wider, some have more narrow size distributions. One ceramic proppant sample had a bimodal distribution (red “Ceramic- Prop-EP-20-40-Mesh-40”).
  32. 32. Shape Comparison Q3 [%] Ceramic-Prop-EP-20-40-Mesh-40.rdf 90 Ceramic-Prop-SB-20-40-Mesh1.rdf Ceramic-Prop-SG-V-1.rdf 80 Sand-Prop-SIB-20-40-MIS-9.rdf Natural-Brown-Sand-C-20-40.rdf White-Sand-Prop-UNF-20-40-17.rdf 70 White-Sand-Prop-SIB-20-40-CHF-10.rdf White-Sand-Prop-UNF-20-40-1.rdf 60 White-Sand-Prop-UNF-20-40-8.rdf 50 40 30 w© Retsch Technology 2012 - 32 20 l 10 0 0.3 0.4 0.5 0.6 0.7 0.8 AspctRatio Shape comparison between natural sand proppants and ceramic proppants. There are two clearly different ranges of Aspect Ratio (Krumbein’s Sphericity). Analysis of other shape parameters are possible as well (Convexity for ceramic bead twins, Symmetry for good and broken ceramic beads, Krumbein’s Roundness etc.)
  33. 33. Grain Size Analysis of Ceramic Proppants Ceramic-Proppant-16-30Mesh_xc_min_001.rdf passing [%] Ceramic-Proppant -20-40Mesh_xc_min_001.rdf Ceramic-Proppant -20-40Mesh_xc_min_002.rdf 90 Ceramic-Proppant -20-40Mesh_xc_min_003.rdf Ceramic-Proppant -30-60Mesh_xc_min_003.rdf Ceramic-Proppant -30-60Mesh_xc_min_004.rdf 80 Blasting Product -40-120Mesh_xc_min_001.rdf Proppant + Interlocking Grains -10-20Mesh_xc_min.rdf 70 60 50© Retsch Technology 2012 - 33 40 30 20 xc min 10 0 #325 #230 #170 #120 #80 #60 #45 #35 #25 #18 xc_min [ASTM]
  34. 34. Shape Analysis of Ceramic Proppants Q3 [%] Ceramic-Proppant -16-30Mesh_xc_min_001.rdf Ceramic-Proppant -20-40Mesh_xc_min_001.rdf 90 Ceramic-Proppant -20-40Mesh_xc_min_002.rdf Ceramic-Proppant -20-40Mesh_xc_min_003.rdf Ceramic-Proppant -30-60Mesh_xc_min_003.rdf 80 Ceramic-Proppant -30-60Mesh_xc_min_004.rdf Blasting-Product-40-120Mesh_xc_min_001.rdf 70 Proppant + Interlocking Grains-10-20Mesh_xc_min.rdf 60 50© Retsch Technology 2012 - 34 40 30 20 10 0 0.3 0.4 0.5 0.6 0.7 0.8 AspctRatio
  35. 35. Hydraulic Fracturing© Retsch Technology 2012 - 35 Principle draft of modern and effective oil and gas exploration
  36. 36. © Retsch Technology 2012 - 36 Proppant Flowback
  37. 37. Ceramic Proppant Measurement Results with Interlocking Particles Amounts of Proppant Beads and crushed interlocking particles in a mixture Q3 [%] AK_22,15g_0,3%_BZ_LB_n Ü_xc_min_001.rdf IA_22,15g_0,3%_BZ_LB_n Ü_mit Aerosil_xc_min_001.rdf A 90 IA + AK_je 22,15g_0,3%_BZ_LB_n Ü_als Mischung_xc_min_001.rdf B A+B B 80 B A 70 60© Retsch Technology 2012 - 37 50 40 A 30 20 10 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 b/l
  38. 38. Ceramic Proppant Measurement Results with Interlocking Particles CAMSIZER can find the mixing ratio of Proppant Beads and Angular Interlocking Grains Q3 (round particles) = 32.8%© Retsch Technology 2012 - 38 xc min xFe max 67.2%
  39. 39. Fines Migration & Plugging -20/+40 -40/+70 -70/+100 -100 98 % 1.6 % 0.2 %© Retsch Technology 2012 - 39 0.2 % Ceramic Prop after API single cycle crush test at 6000 psi
  40. 40. CAMSIZER – Advantages Applications – Ceramic Proppants Measuring Broken Beads good product r r broken particle TP-WS 0525_Probe1_BZ_0.5%_xc_min_001.rdf Q3 [%] TP-WS 0525_Probe2_BZ_0.5%_xc_min_001.rdf TP-WS 0525_Probe3_BZ_0.5%_xc_min_001.rdf 22 TP-WS 0525_Probe4_BZ_0.5%_xc_min_001.rdf TP-WS 0525_Probe5_BZ_0.5%_xc_min_001.rdf TP-WS 0525_Probe6_BZ_0.5%_xc_min_001.rdf 21 TP-WS 0525_Probe7_BZ_0.5%_xc_min_001.rdf TP-WS 0525_Probe8_BZ_0.5%_xc_min_001.rdf TP-WS 0525_Probe9_BZ_0.5%_xc_min_001.rdf TP-WS 0525_Probe10_BZ_0.5%_xc_min_001.rdf 20% broken 20 19© Retsch Technology 2012 - 40 18 17.4% broken 17 16 15 r1 r2 0.948 0.949 0.950 0.951 0.952 Symm r  Symmetry ~ min 1  r   2
  41. 41. Measurement Results Particle Shape • Breadth-/ Length- xc min ratio xFe max P • Roundness A© Retsch Technology 2012 - 41 r2 • Symmetry C r1 A convex • Convexity A real
  42. 42. Measurement Results Optical Process Control analysis for size and shape© Retsch Technology 2012 - 42
  43. 43. © Retsch Technology 2012 - 43
  44. 44. © Retsch Technology 2012 - 44
  45. 45. Visual Inspection and Comparison with Krumbein‘s Chart© Retsch Technology 2012 - 45
  46. 46. © Retsch Technology 2012 - 46 Features AutoSampler
  47. 47. Trend Analysis© Retsch Technology 2012 - 47 Areas of Application
  48. 48. Quality Control© Retsch Technology 2012 - 48 Features >90% within specification => API conform
  49. 49. Maintenance-Free by Features Venturi-Flushing© Retsch Technology 2012 - 49
  50. 50. 12 Years CAMSIZER ~ 600 installed CAMSIZER Instruments worldwide: Nearly on all continents For many applications/industries: API conformity, Brown sand, Ceramic proppants, Extrudates, Grains, Proppants, Resin coated proppants, Sand, White sand ........© Retsch Technology 2012 - 50
  51. 51. Particle Size of Drilling Fluid© Retsch Technology 2012 - 51 LA-950
  52. 52. Surface Area Size, shape and specific surface area (SSA) affect catalyst performance Measure SSA using BET: SA- 9600 – Flowing gas BET method – Low price,operating costs, maintenance – Easy to use, fastest© Retsch Technology 2012 - 52 measurement time – No vacuum system required – Single or multi-point – Up to three samples simultaneously
  53. 53. Petroleum Analysis Many instruments to measure the quality of oils, fuels, etc. SLFA-20 ASTM D4294 for crude MESA-6000 ASTM D7220 for low ppm sulfur and chlorine© Retsch Technology 2012 - 53
  54. 54. CAMSIZER for elongated particles (extrudates) A 2 A/2 xMa min A xFe max 2 A/2 xc min© Retsch Technology 2012 - 54 xMa min
  55. 55. © Retsch Technology 2012 - 55
  56. 56. CAMSIZER® length definitions for elongated particles (extrudates) xFe max xlength xFe rec xFe rec = xlength xFe rec = xlength xMa min xMa min© Retsch Technology 2012 - 56 xFe rec xMa min
  57. 57. © Retsch Technology 2012 - 57
  58. 58. © Retsch Technology 2012 - 58
  59. 59. © Retsch Technology 2012 - 59
  60. 60. © Retsch Technology 2012 - 60
  61. 61. Applications – Pharmaceuticals Length + Diameter of Implants Length measurement xlength ~ 26mm Diameter measurement Ø ~ 0.85mm© Retsch Technology 2012 - 61 validation and test measurements of 1. with plastic and produced 2. steel cylinders implants (release time 1 month)
  62. 62. Slides Shown During the Q&A Session© Retsch Technology 2012 - 62
  63. 63. Competing Measuring Methods Fitting of CAMSIZER result to Sieving© Retsch Technology 2012 - 63 fitted result CAMSIZER-measurement x (red) to sieving * (blue)
  64. 64. Competing Measuring Methods Digital Image Processing Measuring of Width  Sieving xc min Q3 0.9 --- width measurement “width” 0.8 -*- Sieving Tinovetin-B-CA584A_BZ_xc_min_002.rdf Syngenta-1mm-2min-Sieb.ref 0.7 0.6 0.5 xc min 0.4© Retsch Technology 2012 - 64 0.3 0.2 0.1 0 0.1 1 x [mm] comparison CAMSIZER-measurement xc min (red) and sieving * (black)
  65. 65. Digitale Imaging  Sieving Q3 [%] Sample A_BZ_0.2%_xc_min_001.rdf Sample A_.ref 80 70 60 50 40 30 20 10 0 0.2 0.4 0.6 1 x [mm]© Retsch Technology 2012 - 65
  66. 66. Digital Imaging  Sieving Cubes / Angular Particles Q3 [%] 90 80 RT669_3993_Z_LB_05%_xc_min_001.rdf 70 RT669_RT_3993.ref 60 50 40 30 20 10 0 200 400 600 800 x [µm]© Retsch Technology 2012 - 66
  67. 67. Digital Imaging  Sieving Q3 [%] 90 80 RT669_3993_Z_LB_05%_xc_min_001.rdf 70 RT669_RT_3993.ref 60 50 Examples of samples with 40 edgy particles without fitting 30 20 CAMSIZER-result xc min (red) 10 sieve analysis * (black) 0 200 400 600 800 x [µm]© Retsch Technology 2012 - 67 y 10-16mm_BZ_05%_xc_min_001.Q3 0.9 Real_10-16mm.Q3 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0.5 1.0 1.5 2.0 x
  68. 68. Digital Imaging  Sieving New elementary fitting with single (narrow) sieve class and { entire distribution Q3 0.9© Retsch Technology 2012 - 68 0.8 0.7 0.6 0.5 0.4 0.3 Elementary 0.2 - Fitting 0.1 0 1.0 1.5 2.0 2.5 3.0 xc_min [mm]
  69. 69. Digital Imaging  Sieving Elementary fitting = Sieve Correlation with single (narrow) sieve class© Retsch Technology 2012 - 69 Samples with similar shape
  70. 70. Digital Imaging  Sieving Q3 Q3 0.9 0.9 0.8 0.8 0.7 Q3 – Fitting 0.7 0.6 0.6 0.5 0.5 0.4 0.4 0.3 0.3 0.2 0.2 0.1 0.1 0 0 1.0 1.5 2.0 2.5 3.0 xc_min [mm] 1.0 1.5 2.0 2.5 3.0 xc_min [mm] Elementary Q3 - Fitting 0.9© Retsch Technology 2012 - 70 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 1.0 1.5 2.0 2.5 3.0 xc_min [mm]
  71. 71. Slides Shown During the Q&A Session© Retsch Technology 2012 - 71
  72. 72. Comparison between Static  Dynamic Image Analysis© Retsch Technology 2012 - 72 ISO 13322-1 ISO 13322-2
  73. 73. Slides Shown During the Q&A Session Sampling© Retsch Technology 2012 - 73
  74. 74. Sampling and Sample Splitting Sample Quantity in Mass or Volume ISO 13322-1 in Relation to the Particle Size© Retsch Technology 2012 - 74 A Sufficient Sample Quantity is Based on the Number of Particles
  75. 75. Additional Slides to better explain Sampling and Sample Splitting© Retsch Technology 2012 - 75
  76. 76. Sampling and Sample Splitting Separation of fine and coarse particles Separation happens during - Transport processes (container, train and truck) - Feeding processes (funnels, vibration feeders, belts) - and Storage (bulk pile, silo)© Retsch Technology 2012 - 76
  77. 77. Sampling and Sample Splitting Separation of fine and coarse particles Segregation (separation by size) happens during - Filling processes (silo) - Feeding processes (bulk pile) - Accumulation of fines in the middle of the pile© Retsch Technology 2012 - 77
  78. 78. Applications – Fertilizer Different Fertilizer Product Types, Different Production Methods, as well as Different Sizes and Shapes© Retsch Technology 2012 - 78
  79. 79. Sampling and Sample Splitting Sample Splitting© Retsch Technology 2012 - 79
  80. 80. Sampling and Sample Splitting Sample Splitting Hell© Retsch Technology 2012 - 80
  81. 81. Sampling and Sample Splitting Sample Splitting© Retsch Technology 2012 - 81
  82. 82. Sampling and Sample Splitting Sample Splitting© Retsch Technology 2012 - 82
  83. 83. Sampling and Sample Splitting Sample Splitting© Retsch Technology 2012 - 83
  84. 84. Additional Slides to better explain the CAMSIZER Technology© Retsch Technology 2012 - 84
  85. 85. Measuring Principle Resolution CCD - Basic CCD - Zoom Detection of particles One pixel is element of a projection when at least half of the pixel is covered.© Retsch Technology 2012 - 85
  86. 86. Measuring Principle Range of use Shape Size© Retsch Technology 2012 - 86 30 µm to 30 mm
  87. 87. Measuring Principle Advantages fast reproducible precise© Retsch Technology 2012 - 87 maintenance-free & robust
  88. 88. Measurement Results Particle Size© Retsch Technology 2012 - 88 What is the size of this particle?
  89. 89. Measurement Results Particle Size xc min xarea xFe max “width” “diameter over “length” projection surface” A xc min xFe max© Retsch Technology 2012 - 89 CAMSIZER results are compatible xarea with A‘ = A sieve analysis
  90. 90. Measurement Results Volume Definition Q3 ellipsoid width ellipsoid-volume length  max Vellipsoid   xFe max  xc 2 min xFe 6 xc min© Retsch Technology 2012 - 90 xc min width xc min Ellipsoid model leads to better results
  91. 91. Additional Slides to better explain the Dispersion Technology© Retsch Technology 2012 - 91 (against static charged particles)
  92. 92. Size, Shape & Density Measurement of Charged Coated Resin Beads using an Electric High Voltage Ionizer© Retsch Technology 2012 - 92
  93. 93. Applications – Fertilizer How to separate the dust part from the granules to measure these single dispersed? Dispersion of coated granules with Ultrasonic or ALU-C Aeroxide© Retsch Technology 2012 - 93
  94. 94. © Retsch Technology 2012 - 94
  95. 95. Additional Slides to better explain the Basics of the used Parameters and the© Retsch Technology 2012 - 95 Calibration of the Instrument
  96. 96. Measurement Results Particle Distributions Cumulative distribution Qr Qr [%] 100 Q r(x2 ) Based on Index Q r(x1) r Number 0 Length 1 Q r(x1 ,x2 ) Area 2 Mass/Volume 3 50© Retsch Technology 2012 - 96 0 xmin x50 x1 x2 xmax x median
  97. 97. Measurement Results Particle Distributions Frequency distribution qr q r [%/mm] x2  p r  q r (x ) dx dQ r(x) x1 q r(x)  dx© Retsch Technology 2012 - 97  Q r (x 1, x 2 )  q r (x 1, x 2 )  x x min x1 x x max x 2 mean Mv(x): mean value of x, determined from the distribution of all particles
  98. 98. Measurement Results Particle Distributions Histogram fractions pr p3 [%] Q3 [%] 25 90 80 n Q r (x  xn) =  p r, i 20 70 i0 60 15 50 40 10© Retsch Technology 2012 - 98 30 20 5 10 0 0 400 600 800 1000 1200 x [µm] n is the number of the fraction
  99. 99. Measurement Results Reproducibility© Retsch Technology 2012 - 99 Calibration with traceable standard => Absolute accuracy
  100. 100. Calibration Results Glass Bead-Standard 500µm – 2000µm 1,25mm ± 24µm 95% (* Q3 75% ) written in the calibration certificate CAMSIZER and Sieving (72%) done with calibrated sieve by hand© Retsch Technology 2012 - 100 -- CAMSIZER * Sieving
  101. 101. Calibration Results Whitehouse Standard XX030© Retsch Technology 2012 - 101
  102. 102. End Thank you for your attention!© Retsch Technology 2012 - 102

×