Per 
Item #: SCP-XXXX
Object Class: Euclid
Special Containment Procedures: SCP-XXXX is to be kept in a 15x15x15 centimetre transparent, acrylic container filled with polyethylene glycol that has a density of no lower than 1.12 grams per centimetre cubed to ensure that SCP-XXXX does not sink to the bottom. The lid of this container must have a silicon lip fully surrounding the underside to ensure a liquid-tight seal. This container is then to be placed in a ventilated 3x3x3.25 metre room on site ■■■ with stainless steel walls and miniature humidifier vents, featuring 0.5mm in diameter placed in rows 1 centimetre apart in a square grid-line pattern on every face of the walls excluding the floor and the 4 upper vertices of the room at least 5cm away from the vertex. The floor of the room housing SCP-XXXX must have radiators installed underneath, keeping the room housing SCP-XXXX at 30 degrees Celsius at all times. SCP-XXXX must be monitored by 4 water-proof surveillance cameras positioned in each upper corner of the room, with the lens of each camera coated with anti-fog demister solution- this coating must be re-applied in each lens every 24 hours. In addition, each surveillance camera must be fitted with a hygrometer and a humidistat connected to the humidifier vents to monitor and control the humidity of the interior room, which cannot fall below 28 grams of water per cubic metre of air. The floor of this room is 0.25 metres deeper than the entrance door of SCP-XXXX and must be filled with additional polyethylene glycol up to a maximum of 5 centimetres below the entrance door to prevent leakage. To prevent back-flow, no humidifier vents are to be placed below the 0.25 metre surplus depth on the 4 side walls of the room. The entrance of site ■■■ leading to SCP-XXXX must be guarded by 2 armed personnel at all times. Any requests to open the box containing SCP-XXXX and/or the utilisation of SCP-XXXX held within must have the approval of O5-■ and O5-■. When SCP-XXXX is being used by any personnel with a security clearance level of 3 or below, supervision of said subject must be employed by the armed personnel guarding the containment site of SCP-XXXX. Lethal force will be engaged to unauthorised personnel caught on site ■■■ and/or the attempt of accessing SCP-XXXX. Should armed personnel not be present on site ■■■, said assigned personnel will receive summary punishment from the O5 Council and may additionally incur a class demotion. Reinforced security have not previously been implemented, but was necessarily added as of ■■■ to prevent ■■■■■■■■.
Description: SCP-XXXX is a pink, rhombohedral-cuboid eraser. It features 60mm x 11mm x 7mm in size, weighing 9.2 grams in its entirety. SCP-XXXX is capable of seemingly erasing any form of matter should a user rub any part of SCP-XXXX across the surface of any material. However, SCP-XXXX appears to only be able to erase physical matter that is in a solid phase. Attempting to erase liquids and gases of any sort have shown to not be affected by SCP-XXXX whatsoever. SCP-XXXX appears to only affect solid substances that the user intends on erasing for the majority of the time, however, if excessive force is exerted by the user onto the eraser, the erasing effect applies on the area where the user was holding it. This may result in the disappearance of skin and flesh, causing mild bleeding and pain initially. Although SCP-XXXX has the potential of posing greater harm of anyone coming into contact to SCP-XXXX, the damage caused onto biological life is often mitigated by SCP-XXXX's property of not being able to affect liquids and gases, as bleeding from the contact area quickly shields the injury from further reaction with SCP-XXXX. Despite this limitation, SCP-XXXX is still a threat to any infrastructure of the SCP Foundation, as SCP-XXXX can easily be exploited into breaching ■■■■■ and every possible [REDACTED], regardless of ■■■. The density and mass of any solids do not change the effectiveness of SCP-XXXX, and will erase any solid at the same rate of any other solid. SCP-XXXX is flexible most similar to rubber, though slightly more firm. SCP-XXXX, while flexible, cannot break or be forcefully partitioned into smaller pieces by any means other than using SCP-XXXX to erase solid matter. Rubber crumbs of SCP-XXXX left from erasures however, are destructible. SCP-XXXX cannot be fully used to completion, as SCP-XXXX loses its erasing properties once its mass is reduced to 0.2 grams. Even during this suspended state, SCP-XXXX cannot be destroyed in any way. SCP-XXXX will begin regenerating any lost mass when it has not been used in the last minute at a rate of 0.92 grams per minute, slowly returning to its original shape taking a maximum of just under 10 minutes or under 11 minutes if taking into account the idle time. Unusually, while SCP-XXXX itself is insoluble, rubber crumbs left from erasures using SCP-XXXX are, allowing solvent analyses of SCP-XXXX and its potential chemical composition can be measured. After analysing a sample of SCP-XXXX's rubber crumbs using Mass Spectrometry and Infrared Spectroscopy, no element in the current periodic table has yet matched with the results of these analyses. Dr. ■■■ proposes that SCP-XXXX absorbs solid matter and shaves off any mass taken from the erased object and transfers it onto the rubber crumbs, which has been proven false by further experimentation, showing that any rubber crumbs left from subsequent erasures using SCP-XXXX does contain any of the erased substance that would usually be present in rubber crumbs from ordinary erasers. The total mass of the recently used SCP-XXXX and any rubber crumbs produced in the process will always equal the total mass of SCP-XXXX in its entirety, at exactly 9.2 grams. However, any reduced mass from the object of erasure expended by SCP-XXXX is completely absent from the erased object and the rubber crumbs of SCP-XXXX. This violates the law of conservation mass and energy. Researchers experimenting with SCP-XXXX have divided views on this phenomenon- with some believing that our current understanding of physics to be fundamentally wrong, or that SCP-XXXX is a meta-stable form of antimatter, while others postulate that SCP-XXXX violating these laws is due to the fact that it originates from another universe with different fundamental laws and restrictions. The exact mechanism of how SCP-XXXX can erase matter is unknown and no accurate explanation is yet to be ascertained.
