{"id":10872,"date":"2025-11-17T16:08:16","date_gmt":"2025-11-17T16:08:16","guid":{"rendered":"https:\/\/astroshop.ma\/?post_type=product&p=10872"},"modified":"2025-11-17T16:08:16","modified_gmt":"2025-11-17T16:08:16","slug":"bestscope-bsem-691lv-tungsten-filament-scanning-electron-microscope","status":"publish","type":"product","link":"https:\/\/astroshop.ma\/?product=bestscope-bsem-691lv-tungsten-filament-scanning-electron-microscope","title":{"rendered":"BestScope BSEM-691LV Tungsten Filament Scanning Electron Microscope"},"content":{"rendered":"

\"\"<\/p>\n

 <\/p>\n

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BSEM-691LV is a Tungsten Filament Scanning Electron Microscope. It has excellent imaging quality capabilities. It has More than ten extend interface for accessories such as WDS, EDS, EBSD, etc.<\/p>\n<\/div>\n

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Details<\/h3>\n
\n
Model:BSEM-691LV<\/div>\n
Stage:Five axis automatic specimen stage<\/div>\n
Detectors:SE\/BSE\/IRCCD<\/div>\n
Magnification:1-300000X<\/div>\n
Resolution:3nm@30kV (SE) High Vacuum, 4nm@30KV (BSE) High Vacuum, Low Vacuum<\/div>\n<\/div>\n<\/div>\n
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\n

Introduction<\/h3>\n<\/div>\n
\n

<\/h4>\n
\n

BSEM-691 is a Tungsten Filament Scanning Electron Microscope. It has excellent imaging quality capabilities. It has More than ten extend interface for accessories such as WDS, EDS, EBSD, etc. It helps users to characterize specimens and explore the world of microscopic imaging and analysis. BSEM-691LV has low vacuum modes, and the high and low vacuum modes can be quickly switched.<\/p>\n<\/div>\n<\/div>\n

\n

Features<\/h4>\n
\n

1.Specification<\/strong><\/p>\n

Resolution:<\/p>\n

BSEM-691:\u00a0<\/strong>3nm@30KV (SE), 8nm@3KV (SE), 4nm@30KV (BSE).<\/p>\n

BSEM-691LV:<\/strong>\u00a03nm@30kV (SE) High Vacuum, 4nm@30KV (BSE) High Vacuum, Low Vacuum.<\/p>\n

 <\/p>\n

Magnification: 1-300000X<\/p>\n

 <\/p>\n

Electron Gun: Pre-centered tungsten filament cathode<\/p>\n

 <\/p>\n

Accelerating Voltage:<\/p>\n

BSEM-691:\u00a0<\/strong>0.2-30kV, continuously adjustable (0~10kV step in 100V, 10kV~30kV step in 1kV).<\/p>\n

BSEM-691LV:\u00a0<\/strong>0.2\uff0d30 kV. Continuously Adjustable (0.2~10kV step in 100V, 10kV~30kV step in 1kV)<\/p>\n

 <\/p>\n

Lens System: Three stage high performance electromagnetic lens system.<\/p>\n

 <\/p>\n

Objective Aperture: Three objective apertures adjustable outside the vacuum system, replacing without disassemble lens.<\/p>\n

 <\/p>\n

Vacuum System: Turbo molecular pump*1, Mechanical pump*1 (optional oil free mechanical pump). Specimen chamber vacuum better than 2.6E-3Pa, automatic vacuum control with vacuum interlock in order to avoid mis-operation.<\/p>\n

Low Vacuum of BSEM-691LV: 10-270 Pa, one-key switch between high vacuum and low vacuum, switching time less than 90s.<\/p>\n

 <\/p>\n

Detector: High vacuum secondary electron detector (SE), Integrated back scattering detector (BSE), IRCCD<\/p>\n

More than ten extend interface for accessories such as WDS, EDS, EBSD, etc.<\/p>\n

 <\/p>\n

2.5 axis motorized stage<\/strong><\/p>\n

Five-axis eucentric motorized stage: X=0-80mm, Y=0-50mm, Z=0-30mm, T=-5\u00b0~+70\u00b0, R=360\u00b0.<\/p>\n

Max loadable sample: \u0424175mm. Max height of sample: 40mm.<\/p>\n

Touching alarm and auto-stop, in case of mis-operation.<\/p>\n

Optional five-axis eucentric motorized stage: X=0-150mm, Y=0-150mm, Z=0-65mm, T=-10\u00b0~+90\u00b0, R=360\u00b0.<\/p>\n

Max loadable sample: \u0424320mm. Max height of sample: 80mm.<\/p>\n

 <\/p>\n

3.Image Processing<\/strong><\/p>\n

4096*3072 pixels display. Image Format: TIF, BMP, GIF, JPG, PNG.<\/p>\n

 <\/p>\n

4.Work station<\/strong><\/p>\n

PC Workstation (Customized upon request). Image can be saved at hard or other storage medium, or printout.<\/p>\n

Commercial workstation, Intel Xeon; 16G RAM+500G SSD+1TB graphics card, P1000 (independent graphics card -4G) +232 interface, 24\u201d Monitor, wireless keyboard & mouse. Windows 10 operating system available in both Chinese and English language.<\/p>\n

 <\/p>\n

5.Software Control<\/strong><\/p>\n

High pressure regulation Vertical line scan, Electric displacement regulation, Filament current regulation, Condenser adjustment, Multi scale measurement, Astigmatic adjustment, Electric to central adjustment, Automatic brightness\/contrast, Brightness adjustment, Objective lens adjustment, Auto focus, Contrast adjustment, Photo Preview, Automatic astigmatism elimination, Magnification adjustment, Active ruler, Automatic filament adjustment, Selected area scanning mode, 4 Scanning speed setting, Management of parameters, Point scanning mode, Objective lens inversion Image snapshot, image freezing, Surface scanning, Condenser reversal, One Key Quick View, Horizontal line scanning, Electric rotation adjustment, etc.<\/p>\n<\/div>\n<\/div>\n

\n

Installation Requirements<\/h4>\n
\n

1.Power supply requirements<\/strong><\/p>\n

Voltage: AC 220V \u00b1 10%, 50Hz \u00b1 1 Hz, standard sine wave.<\/p>\n

It is not recommended to share the power supply line with the instrument for equipment with high power and large power consumption change.<\/p>\n

Three power sockets needed for: Scanning electron microscope instrument body. Computer: AC 220V, 50Hz, 16A. Mechanical pump and air compressor: AC 220V, 50Hz, 16A.<\/p>\n

 <\/p>\n

2.Environmental requirements for installation site<\/strong><\/p>\n

Temperature between 16-30\u00b0C is recommended. The relative humidity shall be less than 60%.<\/p>\n

Recommend configuration: air conditioner, dehumidifier and other equipment that can ensure the temperature and humidity of the laboratory.<\/p>\n

Noise: <68 DB.<\/p>\n

The durability of the instrument operation: continuously working.<\/p>\n

    \n
  • To fulfill above environment condition is the key factor to reach\u00a0<\/strong>the<\/strong>\u00a0best performance<\/strong>\u00a0of the instrument.<\/strong><\/li>\n<\/ul>\n

    3.Instrument Dimension & Weight<\/strong><\/p>\n

    Microscope body: 800mm*800mm*1850mm<\/p>\n

    Working table: 1340mm*850mm*740mm<\/p>\n

    Total weight: 400kg<\/p>\n

    The floor bearing capacity should \u2265 500kg\/m3<\/sup>, and it is recommended to place it on the first floor\/ground floor.<\/p>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    Packaging Dimension & Weight:<\/p>\n

    1 Set in 3 Wooden Boxes: 110cm*110cm*180cm*1, 130cm*122cm*136cm*1, 161cm*90cm*115cm*1.<\/p>\n

    Total Volume 5.3189CBM, Total G.W. 872 kg.<\/p>\n<\/div>\n

    Application<\/h4>\n
    \n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    Graphene<\/p>\n

     <\/p>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    Cobaltosic oxide<\/p>\n

     <\/p>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    Plastic powder<\/p>\n

     <\/p>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    Solder ball<\/p>\n

     <\/p>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    PCB Failure analysis<\/p>\n

     <\/p>\n

     <\/p>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    Coscinodiscus<\/p>\n

     <\/p>\n

     <\/p>\n

    \"\"<\/p>\n

     <\/p>\n

    Kiwi pollen<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Item<\/td>\nSpecification<\/td>\nBSEM-691<\/td>\nBSEM-691LV<\/td>\n<\/tr>\n
    Electron Scanning Microscope<\/td>\nEM691 Tungsten Filament SEM<\/td>\n\u25cf<\/td>\n <\/td>\n<\/tr>\n
    EM691LV Tungsten Filament SEM<\/td>\n <\/td>\n\u25cf<\/td>\n<\/tr>\n
    Five axis automatic specimen stage, X=0-80mm, Y=0-50mm, Z=0-30mm, T=-5\u00b0~+70\u00b0, R=360\u00b0. Max loadable sample: \u0424175mm. Max height of sample: 40mm.<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Detectors<\/td>\nSE detector<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    BSE detector<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    IRCCD<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    PC<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Air compressor<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Consumable Items<\/td>\nTungsten Filament, pre-centered, 5pc\/box<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Sample cup, \u03a613mm<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Sample cup, \u03a632mm<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Carbon double-sided conductive tape, 6mm<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Vacuum grease, not allowed through air transportation<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Hairless cloth<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Polishing paste, not allowed through air transportation<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Sample box<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Cotton swab, 100\/bag<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Exhaust pipe, 5m<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Tools<\/td>\nInner hexagon spanner, 1.5mm-10mm<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Tweezers, length 100-120mm<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Slotted screwdriver, 2*50mm, 2*125mm<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Cross screwdriver, 2*125mm<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Filament adjustment tool<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
    Filament adjusting gasket<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":10874,"template":"","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"product_brand":[],"product_cat":[190,28],"product_tag":[],"class_list":{"0":"post-10872","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-electron-microscope","7":"product_cat-microscopes","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"yoast_head":"\nBestScope BSEM-691LV Tungsten Filament Scanning Electron Microscope - Astroshop Maroc<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/astroshop.ma\/?product=bestscope-bsem-691lv-tungsten-filament-scanning-electron-microscope\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BestScope BSEM-691LV Tungsten Filament Scanning Electron Microscope - Astroshop Maroc\" \/>\n<meta property=\"og:description\" content=\"Item Specification BSEM-691 BSEM-691LV Electron Scanning Microscope EM691 Tungsten Filament SEM \u25cf   EM691LV Tungsten Filament SEM   \u25cf Five axis automatic specimen stage, X=0-80mm, Y=0-50mm, Z=0-30mm, T=-5\u00b0~+70\u00b0, R=360\u00b0. Max loadable sample: \u0424175mm. Max height of sample: 40mm. \u25cf \u25cf Detectors SE detector \u25cf \u25cf BSE detector \u25cf \u25cf IRCCD \u25cf \u25cf PC \u25cf \u25cf Air compressor \u25cf \u25cf Consumable Items Tungsten Filament, pre-centered, 5pc\/box \u25cf \u25cf Sample cup, \u03a613mm \u25cf \u25cf Sample cup, \u03a632mm \u25cf \u25cf Carbon double-sided conductive tape, 6mm \u25cf \u25cf Vacuum grease, not allowed through air transportation \u25cf \u25cf Hairless cloth \u25cf \u25cf Polishing paste, not allowed through air transportation \u25cf \u25cf Sample box \u25cf \u25cf Cotton swab, 100\/bag \u25cf \u25cf Exhaust pipe, 5m \u25cf \u25cf Tools Inner hexagon spanner, 1.5mm-10mm \u25cf \u25cf Tweezers, length 100-120mm \u25cf \u25cf Slotted screwdriver, 2*50mm, 2*125mm \u25cf \u25cf Cross screwdriver, 2*125mm \u25cf \u25cf Filament adjustment tool \u25cf \u25cf Filament adjusting gasket \u25cf \u25cf\" \/>\n<meta property=\"og:url\" content=\"https:\/\/astroshop.ma\/?product=bestscope-bsem-691lv-tungsten-filament-scanning-electron-microscope\" \/>\n<meta property=\"og:site_name\" content=\"Astroshop Maroc\" \/>\n<meta property=\"og:image\" content=\"https:\/\/astroshop.ma\/wp-content\/uploads\/2025\/11\/2-1-BSEM-691-Tungsten-Filament-Scanning-Electron-Microscope-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/astroshop.ma\\\/?product=bestscope-bsem-691lv-tungsten-filament-scanning-electron-microscope\",\"url\":\"https:\\\/\\\/astroshop.ma\\\/?product=bestscope-bsem-691lv-tungsten-filament-scanning-electron-microscope\",\"name\":\"BestScope BSEM-691LV Tungsten Filament Scanning Electron Microscope - 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