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Search results for: 'Explain the difference between "hard" and "soft" water and how it is measured.'

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  1. Free Software WiFi Full Viewing Wiegand Waterproof Multi Recognition Face Detection Program Facial Reader Engine Control Module
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    Free Software WiFi Full Viewing Wiegand Waterproof... SKU : WCAM101119340167
    Special Price US$142.60 Regular Price US$158.45
  2. DC15V Shopping Mall 8.2MHZ EAS RF Soft Label Deactivator RF Digital Glass Pad Deactivator Anti-Theft Alarm Sensor 21.9*21.9cm
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    DC15V Shopping Mall 8.2MHZ EAS RF Soft Label Deact... SKU : eas_Deactivator_HR_904_RF
    Special Price US$21.77 Regular Price US$24.18
  3. Waterproof Mini portable Bluetooth smart Fingerprint Lock Anti Theft iOS Android APP control door
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    Waterproof Mini portable Bluetooth smart Fingerpri... SKU : 32962995679
    Special Price US$21.77 Regular Price US$24.19
    Out of stock
  4. RFID 134.2KHz module FDX-B FDXB ISO 11784 with external coil antenna and sample tags
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    RFID 134.2KHz module FDX-B FDXB ISO 11784 with ext... SKU : UHF11784ANT1
    Special Price US$17.42 Regular Price US$19.35
  5. Fingerprint Padlock Smart Fingerprint Lock IP66 Waterproof Dustproof Design Keyless Anti-theft
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    Fingerprint Padlock Smart Fingerprint Lock IP66 Wa... SKU : 32939904529
    Special Price US$17.27 Regular Price US$19.19
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  6. Water-Proof Cat5 One Cable Multi Apartment Color Video Doorbell
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    Water-Proof Cat5 One Cable Multi Apartment Color V... SKU : WCAM101119340410
    Special Price US$388.91 Regular Price US$432.12
  7. Waterproof Multi Apartment Building Intercom Video Door Phone
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    Waterproof Multi Apartment Building Intercom Video... SKU : WCAM101119340282
    Special Price US$388.91 Regular Price US$432.12
  8. Face Recognition Thermal Camera Body Temperature Thermal Camera
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    Face Recognition Thermal Camera Body Temperature T... SKU : WCAM101119340235
    Special Price US$272.24 Regular Price US$302.49
  9. 1pc USB ACR122U NFC RFID Smart Card Reader Writer For all 4 types of NFC (ISO/IEC18092) Tags + 5pcs
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    1pc USB ACR122U NFC RFID Smart Card Reader Writer ... SKU : ACR122U-A9
    Special Price US$21.77 Regular Price US$24.19
  10. Anti-Theft Lock Hitch Coupling Lock Trailer Parts Tow Ball Caravan Camping Anti Theft Trailer Access
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    Anti-Theft Lock Hitch Coupling Lock Trailer Parts ... SKU : 32925747414
    Special Price US$9.87 Regular Price US$10.96
    Out of stock
  11. ANSI/ISO Standard ATM Magnetic Card Access Control
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    ANSI/ISO Standard ATM Magnetic Card Access Control SKU : NORDS10092222
    Special Price US$43.21 Regular Price US$48.01
  12. Original Xiaomi Aqara Water Immersing Sensor Flood Water Linkage Detector Zigbee System Remote Alarm
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    Original Xiaomi Aqara Water Immersing Sensor Flood... SKU : 32827035225
    Special Price US$18.60 Regular Price US$20.67
  13. 4G WiFi GPS Handheld Night Vision Thermal Infrared Night Vision Binoculars Scope Thermal
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    4G WiFi GPS Handheld Night Vision Thermal Infrared... SKU : WCAM101119340593
    Special Price US$1,901.34 Regular Price US$2,112.60
  14. SANNCE 4CH Wireless NVR CCTV System 720P IP Camera WIFI Waterproof IR Night Vison Home Security Came
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    SANNCE 4CH Wireless NVR CCTV System 720P IP Camera... SKU : 32729321663
    Special Price US$108.28 Regular Price US$120.31
    Out of stock
  15. 2016 New DC12V LED Amber Car Truck Magnetic Mounted Vehicle Emergency Beacon Emergency Strobe Flashi
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    2016 New DC12V LED Amber Car Truck Magnetic Mounte... SKU : 32710813046
    Special Price US$4.35 Regular Price US$4.84
    Out of stock
  16. ip68 waterproof plastic enclosure junction box wall mount waterproof metal box plastic enclosure
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    ip68 waterproof plastic enclosure junction box wal... SKU : 1996054628
    Special Price US$29.80 Regular Price US$33.11
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  17. Waterproof Keyless Bluetooth Fingerprint Lock Padlock Anti-Theft APP Control Door Cabinet Smart
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    Waterproof Keyless Bluetooth Fingerprint Lock Padl... SKU : 32968330769
    Special Price US$21.34 Regular Price US$23.71
    Out of stock
  18. Large LCD thermometer hygrometer humidity temperature meter clock snooze alarm with sensor trend dis
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    Large LCD thermometer hygrometer humidity temperat... SKU : 32958527709
    Special Price US$22.93 Regular Price US$25.48
    Out of stock
  19. TONYON Folding Bike Lock Ultra Strong Harden Steel Alloy Metal Bone With Plastic Coating
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    TONYON Folding Bike Lock Ultra Strong Harden Steel... SKU : 32885481484
    Special Price US$11.32 Regular Price US$12.58
    Out of stock
  20. RFID UHF USB desktop Reader and Writer 902～928MHz/865～868MHz 18000-6C with English SDK demo software user manual
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    RFID UHF USB desktop Reader and Writer 902～928MH... SKU : JRD1902
    Special Price US$21.77 Regular Price US$24.19
  21. 10pcs 86 type universal switch waterproof box splash waterproof switches socket boxes
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    10pcs 86 type universal switch waterproof box spla... SKU : 1521080518
    Special Price US$0.19 Regular Price US$0.21
    Out of stock
  22. 2 pcs 225*150*79mm IP68 aluminum box for electronic waterproof DIY junction box outdoor metal box ho
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    2 pcs 225*150*79mm IP68 aluminum box for electroni... SKU : 32697259184
    Special Price US$67.41 Regular Price US$74.90
    Out of stock
  23. 1 pcs 225*150*79mm IP68 aluminum waterproof enclosure DIY junction box outdoor metal box
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    1 pcs 225*150*79mm IP68 aluminum waterproof enclos... SKU : 32695573483
    Special Price US$36.30 Regular Price US$40.33
  24. 145*100*45MM 2015 Industrial Electric IP67 Waterproof Metal Enclosure Junction Terminal Aluminum Box
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    145*100*45MM 2015 Industrial Electric IP67 Waterpr... SKU : 32443227936
    Special Price US$32.71 Regular Price US$36.34
    Out of stock
  25. 150*100*80MM Hot Sale IP67 Square Metal Junction Box Waterproof aluminium box use for connection
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    150*100*80MM Hot Sale IP67 Square Metal Junction B... SKU : 32442858323
    Special Price US$5.23 Regular Price US$5.81
    Out of stock
  26. 4Pcs Stainless Steel Spring Toggle Latch Catch For Case Chest Lock Box Lock Hardware Tools Mayitr
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    4Pcs Stainless Steel Spring Toggle Latch Catch For... SKU : 32815680439
    Special Price US$0.35 Regular Price US$0.39
  27. 4m Flash Memory IP68 Magnetic USB 125kHz RFID Card Guard Tour Patrol System Item
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    4m Flash Memory IP68 Magnetic USB 125kHz RFID Card... SKU : 101015000002
    Special Price US$44.70 Regular Price US$49.67
  28. RFID 13.56 Mhz ISO 15693 Desktop Reader Writer USB SDK Plug-n-Play
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    RFID 13.56 Mhz ISO 15693 Desktop Reader Writer USB... SKU : BC75015693RWU
    Special Price US$23.23 Regular Price US$25.81
  29. HTTP/Mqtt Free Sdk/API Software 10 Inch Qr+RFID Face Recognition Access Control Outdoor
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    HTTP/Mqtt Free Sdk/API Software 10 Inch Qr+RFID Fa... SKU : WCAM101119340599
    Special Price US$142.60 Regular Price US$158.45
  30. Glass Lock Hardware Cold Rolled Steel Security Drawer Lock Kids Safety Lock Desk Wardrobe Furniture
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    Glass Lock Hardware Cold Rolled Steel Security Dra... SKU : 32923603619
    Special Price US$1.02 Regular Price US$1.13
    Out of stock
  31. Newest IOS Android APP Control Bluetooth Smart Bicycle Lock Anti Theft Alarm Padlock for Cycling
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    Newest IOS Android APP Control Bluetooth Smart Bic... SKU : 32952281963
    Special Price US$30.19 Regular Price US$33.55
    Out of stock
  32. New RFID UHF PCB Inlay Tags at lowest $0.5 EPC 96-bit ISO 18000 On-metal 36x13x3mm
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    New RFID UHF PCB Inlay Tags at lowest $0.5 EPC 96-... SKU : UHFPCB
    Special Price US$0.44 Regular Price US$0.48 As low as US$0.09
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