Unigloves Black Pearl Nitrile Gloves, Black, Powder-free, Size M, GP0033

In a laboratory with several workstations or in a workplace with different work areas, a consistent colour-coding system helps to prevent mix-ups. Black nitrile gloves such as the Unigloves Black Pearl fulfil this function without compromising on protection or certification. These powder-free, latex-free gloves, made from fully dipped nitrile, feature textured fingertips for a secure grip during wet or oily tasks and a rolled cuff that makes them easier to put on. They are sold in a box of 1,000, divided into 10 boxes of 100 each, in five sizes from XS to XL.

Latex-free, thiuram-free and protein-free

As gloves made entirely from nitrile, the Black Pearl range is completely latex-free and, according to the manufacturer, also thiuram-free and protein-free. This makes them a suitable choice for staff who need to take into account allergies to natural latex or sensitisation to vulcanisation accelerators (thiurams). The median tear strength is at least 6.0 N both before and after artificial ageing, whilst the palm has a thickness of at least 0.05 mm, measured as a single layer in the centre of the palm according to the data sheet.

Nitrile gloves with chemical protection in accordance with EN 374, Category III, Type C

The glove is certified as a chemical-protective glove in accordance with EN ISO 374-1, Category III, Type C, the highest protection category specified by the standard, and also provides protection against viruses, fungi and bacteria in accordance with EN ISO 374-5. A permeation level of 6 was determined for 40 per cent sodium hydroxide solution in accordance with EN 374-4, which corresponds to the highest level on the scale, with a degradation rate of minus 5.3 per cent. For work involving other chemicals, it is worth consulting the manufacturer’s product-specific chemical resistance table in advance, as the data sheet only lists this one test chemical with numerical values.

Certified to EN 455 and PPE Category III

The Black Pearl gloves comply with EN 455 (Parts 1 to 4) for medical single-use gloves and are manufactured under a quality management system certified to DIN EN ISO 13485:2021. As personal protective equipment, they are classified in Category III, the highest PPE category for gloves involving complex risks, with type examination in accordance with Modules B and C2 of the PPE Regulation (EU) 2016/425 by the notified body CCQS (No. 2834). In the 1,000 ml water tightness test, they demonstrate a high level of impermeability with an AQL value of 1.5. Furthermore, they are food-safe; however, the data sheet does not specify a particular regulation in this regard.

Choosing the right size

With nitrile gloves, the fit determines tactile sensitivity and safety: if they are too tight, they are difficult to put on and restrict dexterity; if they are too loose, they reduce grip and may slip whilst working. The manufacturer also assigns a numerical glove size to each Black Pearl ready-to-wear size, ranging from 5 to 6 for XS to 9 to 10 for XL. These numbers follow the standard sizing system used in EN ISO 21420, one of the standards against which the Black Pearl is tested, and are based on hand circumference in inches, measured at the widest point of the hand excluding the thumb. If you already know your glove size from other PPE gloves, you can use that directly; alternatively, you can refer to the specified width in millimetres.

Black in the twelve-piece Pearl range

Black Pearl is one of twelve colours in the Unigloves Pearl range available from us: Blue Pearl, Cobalt Pearl, Yellow Pearl, Green Pearl, Violet Pearl, Magenta Pearl and Mint Pearl, through to Opal Pearl, Orange Pearl and Pink Pearl, and finally Red Pearl. All colours share the same basic construction of fully dipped nitrile with textured fingertips, a rolled cuff and certification to EN ISO 374-1 Category III Type C; however, according to the respective data sheets, they differ slightly in details such as the thickness of the palm and the width per size, varying between approximately 0.05 mm and 0.09 mm depending on the colour. For exact values for any other colour, please refer to the relevant product-specific data sheet.

Black is particularly suitable where contrast is important: light-coloured powder residues, crystals or foreign particles are easier to spot on a dark surface than on a light-coloured glove, and in the tattoo and cosmetics industries, black has now become an established part of the look. In a workplace using several Pearl colours, black can also be used specifically for colour-coding, for example, to clearly distinguish a workstation, a process step or a shift from the other colours, without any one colour being at a technical disadvantage.

Use, storage and disposal

The Black Pearl data sheet does not provide any information on storage conditions or shelf life; therefore, no figures are given here either. Regarding handling, the manufacturer states that this is a non-sterile, single-use glove that can be worn on either hand.

As a practical guideline based on everyday laboratory practice, not as a manufacturer’s specification, nitrile gloves such as the Black Pearl are usually changed for each task or process step, or at the latest at the first visible sign of damage, soiling or contact with chemicals outside the tested application. After use, they are generally disposed of as operational waste, whilst contaminated gloves are disposed of separately in accordance with internal hazardous substances regulations.

Typical applications

The dark colour makes the Black Pearl an obvious choice wherever contrast or a uniform appearance is required:

• Tattoo and beauty salons, where black has now become an established colour
• Laboratories and food processing, where light-coloured powder residues, crystals or foreign particles are more visible on dark gloves than on light-coloured ones
• Work involving 40 per cent sodium hydroxide solution and comparable chemicals within the scope of the tested EN 374 Category III
• Businesses using multiple Unigloves Pearl colours, where black is specifically used for colour-coding individual workstations, shifts or process steps

For example, in a laboratory with several Pearl colours, it is possible to see at a glance which workstation is currently using black, whilst in a tattoo or beauty salon, the same colour primarily ensures a consistent, professional appearance.

Assessing requirements correctly: from the carton to the rotation routine

The box of 1,000 gloves is divided into 10 boxes of 100 each, so that individual boxes can be made available at different workstations independently of one another, without having to open the entire box. A simple rough calculation based on estimated consumption figures helps with demand planning: at a rate of 10 gloves per workstation per day, a box of 100 covers around two working weeks, whilst a whole carton covers around 20 working weeks. If consumption is higher, at 30 gloves per workstation per day, one box will last for around three to four working days and a carton for a good six to seven working weeks. For businesses with multiple workstations, the same calculation can be multiplied by the number of workstations to roughly estimate the requirement for a specific period and reorder in good time. Sales are exclusively by the full carton; a single box of 100 cannot be selected separately during the ordering process, even though the boxes can be opened and used independently of one another in the workplace.

Frequently asked questions about the 1,000-piece carton

Is Black Pearl latex-free and suitable for people with allergies?
Yes. The glove is made entirely of nitrile and, according to the manufacturer, is latex-free, thiuram-free and protein-free.

How resistant are the gloves to chemicals?
The data sheet lists a test chemical with numerical values: 40 per cent caustic soda with a permeation level of 6 and a degradation rate of -5.3 per cent. A breakthrough time in minutes is not specified in the data sheet; only the permeation level is given. For other chemicals, it is advisable to consult the manufacturer in advance.

Are the Black Pearl gloves sterile?
No, according to the data sheet, they are non-sterile, single-use gloves.

How do I find the right size?
Either by the numerical glove size (XS 5-6 to XL 9-10) or by the width in millimetres; see the size chart above.

Can I order quantities smaller than a 1,000-piece carton?
No, the sales unit is a carton of 1,000 pieces, divided into 10 boxes of 100 pieces each.

Do other Pearl colours differ technically from Black Pearl?
Slightly: the thickness of the palm and the width per size vary between colour variants as shown in the data sheets. For exact specifications of a different colour, please refer to the relevant product-specific data sheet.

Technical details

Scope of delivery

• 1 carton = 10 boxes of 100 pieces each = 1,000 Unigloves Black Pearl nitrile gloves (size as per variant selection)

Individual requirements and procurement service

Do you require a different size, a different colour from the Unigloves Pearl range, or larger quantities for your laboratory or business? Our procurement service will be happy to assist you in making the right choice.